inter laboratory testing scheme - textiles...
TRANSCRIPT
INTER LABORATORY TESTING SCHEME
ON
“Testing of Mechanical parameters
in Textile Material”
TC/ILTS/15/MECH-2/2014
Designed and Conducted by
PPPrrrooofffiiiccciiieeennncccyyy TTTeeessstttiiinnnggg PPPrrrooovvviiidddeeerrr
LLLaaabbbooorrraaatttooorrriiieeesss
TEXTILES COMMITTEE (Ministry of Textiles, Government of India)
P. Balu Road, Prabhadevi Chowk, Prabhadevi, Mumbai – 400 025. Ph : (022) 6652 7542, Fax : 6652 7554
[email protected] & [email protected] www.textilescommittee.gov.in
2014
Inter Laboratory Testing Scheme
OOnn
““TTeessttiinngg ooff MMeecchhaanniiccaall ppaarraammeetteerrss iinn TTeexxttiillee MMaatteerriiaall””
TC/ILTS/15 /MECH-2/2014
Designed and Conducted by
PPPTTT PPPRRROOOVVVIIIDDDEEERRR LLLaaabbbooorrraaatttooorrriiieeesss
TEXTILES COMMITTEE Ministry of Textiles, Government of India
P. Balu Road, Prabhadevi, Mumbai – 400 025.
Ph : (022) 6652 7542, Fax : 6652 7554 [email protected] & [email protected]
www.textilescommittee.gov.in
2014
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NAME AND ADDRESS OF THE PT PROVIDER PT Provider, Laboratory, TEXTILES COMMITTEE (Ministry of Textiles, Government of India) P. Balu Road, Prabhadevi, Mumbai – 400 025. Ph : (022) 6652 7542, Fax : 6652 7554, E-mail : [email protected], E-mail : [email protected]
CONTACT PERSONS (1) Shri Kartikay Dhanda, PT-Coordinator
Director(Laboratories), Textiles Committee, Mumbai –400 025 Ph: 91 22 6652 7519, Fax: 91 22 6652 7554,
(2) Dr. K.S. Muralidhara, PT-Quality Manager Joint Director(Laboratories), Textiles Committee, Mumbai –400 025 Ph: 91 22 6652 7542, Fax: 91 22 6652 7554,
(3) Shri M.S. Shyamsundar, PT-Technical Manager
Quality Assurance Officer (Laboratory), Textiles Committee, Tirupur – 641602 Report prepared by: Shri M.S.Shyamsundar, PT – Technical Manager SCHEME : INTER LABORATORY TESTING SCHEME -TC/ILTS/15/MECH-2/2014 - TTeessttiinngg ooff
MMeecchhaanniiccaall ppaarraammeetteerrss iinn TTeexxttiillee MMaatteerriiaallss DATE OF ISSUE: November 19, 2014
CONFIDENTIALITY : All the information furnished by the participant laboratories shall be kept confidential by the PT Provider and the same shall not be revealed to others. However, if the accrediting body, for example NABL, requests the PT provider to furnish the performance of any of the participant laboratories, the same shall be provided to them directly, after obtaining permission of the concerned participant laboratory
COPY RIGHT: This report is property of Textiles Committee, the PT Provider. The copy right of this report is retained with Textiles Committee. This report should not be reproduced by others in full or partially in any form without obtaining the consent from Textiles Committee, in writing Disclaimer: The PT Schemes are meant for evaluation of performance of the participating laboratory for the specified tests undertaken in the programme only and are voluntary in nature. Further, it is clarified that reasonable care has been taken to meet the requirement of ISO/IEC 17043:2010, while designing and conducting the Schemes. Participating laboratories are expected to exercise due diligence while carrying out the tests and meet all safety, statutory and accreditation body’s requirements. PT Provider and Textiles Committee will not be responsible for any claim/damages arising out of participating in this programme
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I N D E X
S. No. Contents Page No.
1 PT-Provider details
1
2 Index
2
3 Report on Inter Laboratory Testing Scheme
Preamble 3
Textiles Committee 3
PT-Provider 4
The Present Programme 4
Advisory Group 6
Participants 7
Proficiency Test Proceedings 7
Compilation of the Test Results 8
Determination Assigned Value 9
Determination of Standard Deviation for Proficiency Assessment
9
Performance Evaluation of Participants 10
Interpretation of Performance Comment 10
Outliers and Stragglers 10
General Advise to the Participants on the performance
11
4 Annexure - Performance Evaluation of each Participant – Test wise
12
S.No. Table Page No.
1 ILPT schemes conducted by the PT Provider 4
2 Tests covered in TC/ILTS/015/MECH-2/2014 5
3 Advisory Group 6
4 Assigned Values 9
5 Interpretation of Performance comments 10
6 Outliers and stragglers Analysis 11
7 List of outliers and stragglers 11
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Report on Inter Laboratory Testing Scheme
Preamble:
Increasing awareness on textile quality and the buyer requirements are forcing textile
manufacturers and traders to test quality of textile products from reputed laboratories. Reputation of
any laboratory depends upon the result it produces. The test report given by any laboratory should be
precise, accurate, repeatable and reproducible. This means, a set of results obtained within a
laboratory by testing a representative sample at any time interval should be comparable. And also,
the result obtained over testing a representative sample in any laboratory should be comparable with
that of any other laboratory and fall within the statistical tolerance limit. In other words, the laboratory
should be able to generate comparable results by performing the same test
The repeatability and reproducibility of any test result involves the laboratory’s competence in
conducting the test which involves the testing equipment, the skill and knowledge of technical
manpower working in the laboratory, the testing conditions and test method adopted. In this pursuit,
the laboratory has to meet a requirement of maintaining its own management system as per ISO/IEC
17025:2005, to participate in Inter Laboratory Comparison (ILC) and/or Inter Laboratory Proficiency
Testing Scheme (ILPT)
Inter laboratory Comparison is defined by ISO/IEC 17043 as, Evaluation of participant
performance against pre-established criteria by means of inter laboratory comparisons. The goal of
the Inter-laboratory Comparisons (ILC) is to provide verification of each participating laboratory’s
technical capability by obtaining a measurement that agrees with all other Laboratories using different
make & model of testing equipment and man-power. The requirement for inter laboratory
comparisons remains in place today, and has been further entrenched into metrology management
systems by its incorporation in the requirements of ISO/IEC 17025:2005
Textiles Committee:
Textiles Committee is a statutory body under the Ministry of Textiles, Government of India,
established in the year 1963 vide an act of parliament. The Committee has set up 16 laboratories
throughout the country for catering to the testing requirements of the textile trade and industry.
Fourteen laboratories of Textiles Committee are accredited as per ISO/IEC 17025:2005 by National
Accreditation Board for testing & calibration Laboratories (NABL), India. Laboratory at Mumbai is the
first in India to get accredited in the field of Textile Testing. All the laboratories of Textiles Committee
have facilities to test mechanical and chemical test parameters. Nine laboratories of Textiles
Committee have Eco testing facilities. By virtue of the Act, Textiles Committee develops many test
standards and also adopts many national and international standards for testing purpose.
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PT-Provider:
The Laboratory, Textiles Committee at Mumbai conducts as PT Provider, Inter Laboratory
Proficiency Testing (ILPT) schemes for the benefit of Textile Testing laboratories. The national
accreditation agency, NABL nominated Textiles Committee as nodal agency for two ILPT schemes.
The German Standards body, Physikalisch-Technische Bundesanstalt (PTB), Germany recognized
the schemes conducted by Textiles Committee and sponsored some laboratories of SAARC countries
under its Quality Infrastructure Development Project (QIDP) in SAARC countries. Apart from India,
laboratories from Bangladesh, Sri Lanka, Nepal, China, Hong Kong, Vietnam and USA also
participate in the ILPT schemes conducted by Textiles Committee
In order to offer ILPT schemes professionally as a PT Provider, the laboratory of Textiles
Committee at Mumbai has implemented the Management System in accordance with the
requirements stipulated in ISO/IEC 17043 : 2010. The PT Provider has conducted 16 schemes since
2007. The details are given in Table – 1
The Present Programme:
Design: In order to assess the reproducibility of the test results being reported by the various
textile testing laboratories, this Proficiency Testing Scheme for Mechanical testing -
TC/ILTS/15/MECH-2/2014 was designed. The test parameters thus covered in the present PT
Scheme and suggested test methods are given in Table – 2. However, Participants were required to
use the test method which is routinely adopted for the testing of regular samples. Hence, participants
could adopt any equivalent standard or validated in-house method which is equivalent to the
suggested standards.
Table – 1 ILPT schemes conducted by the PT Provider
S.No Identity of the ILPT Year Field PT
items
No. of test
parameters
No. of Labs
participated
1 TC/ILTS/MECH/01/07 2007 Mechanical Fibre, Yarn & Fabric
17 70
2 TC/ILTS/CHEM/02/07 2007 Chemical Fabric 13 70
3 TC/ILTS/MECH/03/08 2008 Mechanical Fabric 11 60
4 TC/ILTS/CHEM/04/08 2008 Chemical Fabric 10 60
5 TC/ILTS/MECH/05/09 2009 Mechanical Fabric 11 50
6 TC/ILTS/MECH/06/09 2009 Mechanical Yarn 12 31
7 TC/ILTS/MECH/07/09 2009 Mechanical Fibre 15 14
8 TC/ILTS/CHEM/08/09 2009 Chemical Fabric 7 51
9 TC/ILTS/CHEM/09/09 2009 Chemical Fabric 4 45
10 TC/ILTS/CHEM/10/09 2009 Chemical Fabric 2 20
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S.No Identity of the ILPT Year Field PT
items
No. of test
parameters
No. of Labs
participated
11 TC/ILTS/MECH/11/10-11 2010-11 Mechanical Fabric 10 65
12 TC/ILTS/CHEM/12/10-11 2010-11 Chemical Fabric 10 70
13 TC/ILTS/Mech-1/2012-13 2012-13 Mechanical Yarn&Fabric 13 42
14 TC/ILTS/Chem-1/2012-13 2012-13 Chemical Fabric and clothing
accessory
12 56
15 TC/ILTS/15/Mech-2/2014 2014 Mechanical Fabric 8 50
16 TC/ILTS/16/Chem-2/2014 2014 Chemical Fabric 8 45
Table – 2 : Tests covered in TC/ILTS/15/MECH-2/2014
S.No TC / ILTS / 015 / MECH-2 / 2014 Standards suggested*
1 Count of yarn removed from fabric IS 3442 / ISO 7211
2 Pilling Resistance(Martindale) ASTM D 4970
3 Abrasion resistance (Martindale) IS 12673 /ISO 12947 / ASTM 4966
4 Breaking (Tensile) strength-raveled strip IS 1969-1/ISO
5 Tear Strength (Elmendorf) ASTM D 1424
6 Pilling Resistance(Random tumble) ASTM D 3512
7 Thickness of fabric ASTM D 1777
8 UV Protection Factor AS/NZS4399
*Note: Participants are required to use the test method which is routinely adopted for the testing of regular samples. Hence,
laboratories can adopt any equivalent standard or validated in-house method which is equivalent to the suggested standards.
Participants adopt in-house developed methods are requested to submit copy of the methods.
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Advisory Group:
As per the requirements stipulated in ISO/IEC 17043:2010, an Advisory Group comprising
the following internal and external experts having the necessary expertise in testing of Textiles and/or
statistics was constituted
Table – 3 : Constitution of Advisory Group
S.No Expert Affiliation Field of
expertise
1 Shri.Kartikay Dhanda, Director (Laboratories), Textiles Committee, Mumbai –400 025
Chairman Textile testing
2 Dr. K. S. Muralidhara, Joint Director (Laboratories), Textiles Committee, Mumbai –400 025
Member Textile testing
3 Shri. S.G. Pathi, Joint Director (Laboratories), Textiles Committee, Mumbai –400 025
Member Textile testing
4 Shri. K. Selvaraj, Deputy Director (Laboratories), Textiles Committee, Mumbai–400 025 Assessor (ISO/IEC 17025), NABL.
Member Textile testing
5 Shri. S. P. Singh, Asst. Director (Laboratories), Textiles Committee, Kanpur-208005 Assessor (ISO/IEC 17025), NABL
Member Textile testing
6 Shri. M. S. Shyamsundar, Quality Assurance Officer, (Laboratories) Textiles Committee, Tirupur–641602, Assessor (ISO/IEC 17025), NABL
Member Textile testing& Statistics
7 Dr. P.V. Varadarajan Principal Scientific Officer (Rtd), CIRCOT, Mumbai Assessor (ISO/IEC 17025), NABL
External Technical Expert
Textile testing
The terms of reference of the Advisory Group were as follows:
a) Planning requirements
b) Identification and resolution of any difficulties expected in the preparation and maintenance of
homogeneous proficiency test items, or in the provision of stable assigned value for a
proficiency test item;
c) Preparation of detailed instructions for participants
d) Comments on any technical difficulties raised by participants
e) Provision of advice in evaluating the performance of participants
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f) Comments on the results and performance of participants as a whole and, where appropriate,
groups of participants or individual participants;
g) Provision of advice for participants (within limits of confidentiality), either individually or within the
report;
h) Responding to feedback from participants; and
i) Planning or participating in technical meetings with participants.
j) Arbitration of any dispute(s) between participating laboratory(ies) and the PT provider
Participants:
In all 50 laboratories from India, Bangladesh and Sri Lanka were participated in this scheme
Proficiency Test Proceedings:
The laboratory of Textiles Committee (PT Provider), Mumbai, procured sufficient quantity of
materials (PT item) from a reputed textiles manufacturer for designing and conducting Inter
Laboratory Testing Scheme, on the basis of expected number of participants
Preparation of PT items: On receipt of the procured materials, PT items were prepared
ensuring the quantity of each PT item is adequate for the testing of all the parameters included in the
scheme. The PT items thus prepared from the material procured were numbered serially, packed in
polyethylene bags and labeled
Allotments of PT items: Allotments of PT items were done by following appropriate
Sampling procedures adopted by using Random Numbers generated by computer, for Homogeneity
testing, Stability testing and for distribution among participants. The remaining part of the population
was kept as reserve for replacement in case of loss or damage. Henceforth, the allotted PT items can
be referred as sample
Homogeneity testing: To verify the homogeneity of the prepared PT items homogeneity
testing was conducted at the laboratory of Textiles Committee at Mumbai, for the test parameters
covered in the scheme by adopting any one of the suggested methods. However, while conducting
performance evaluation of the participants, the “between- samples SD” calculated during
homogeneity testing by a particular method was used for calculating “SD of PT assessment” for
different methods adopted by the participants, as the inherent variation in the sample (degree of non
homogeneity) is independent of the test method adopted. The procedure given in ISO 13528:2005
was followed for conducting homogeneity testing
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Dispatch of PT items: The Proficiency Testing items were dispatched to the respective
participant laboratories on 18th July 2014, along with the following:
(a) Form for Acknowledging the receipt of PT items
(b) Instructions to the participants in the Inter Laboratory Testing Scheme
(c) Form for reporting test results by the participants in the Inter Laboratory Testing Scheme
The participant laboratories were requested to send the test results by 18th August 2014. However, as
per request of participants and administrative reasons results were accepted till 30th September 2014.
The participant laboratories were also requested to
Treat the samples in the same manner as regularly tested samples and accordingly, codify
the samples such that the technical staff testing them are not aware that they are meant
for PT purposes;
Adopt the latest test method which is routinely used by the laboratory for the testing of
regular samples which may be any standard or validated in-house method;
Forward (i) copy of the in-house method adopted (if applicable) for testing any parameter
and also (ii) specify the standard method against which the validation has been done; and,
Forward photo copy of Scope of accreditation certificate as a proof of accreditation for the
test method adopted (applicable to accredited laboratories only).
The participants were informed that, in the absence of proof of accreditation, the participant’s
value will not be considered for arriving at “Assigned Value” for the concerned test parameter,
although, performance of the laboratory will be evaluated for this parameter. Further, it was also
informed that the test results that may be inappropriate for statistical evaluation, for example, gross
errors, miscalculations and transpositions may be excluded for calculation of summary statistics and
performance evaluation of participants.
Compilation of the Test Results:
In order to maintain the confidentiality of the participants of the PT Scheme, the individual
participants were given Code numbers which are generated by using computer. Subsequently, the
test results reported by the participants were tabulated and statistically analyzed for the basic
statistics viz., Mean, Median, Mode, Maximum, Minimum, Standard Deviation, etc., While doing so,
test results were checked for inappropriate for statistical evaluation, for example, gross errors,
miscalculations and transpositions
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Determination Assigned Value:
To ensure the measurement traceability, only accredited participants are considered for
evaluating the Assigned Values. Thus due weightage is given to the accredited participants. That is,
this weightage is given only when the participant had submitted their Scope of accreditation along with
test results and accredited for the specific test in which the ILPT is conducted. However, when
sufficient numbers of accredited participant are not available for any test, Assigned Value is derived
from the consensuses from all participants for that parameter
Initially, the robust average and the standard deviation of values reported by the accredited
laboratories (in respective tests) were determined for each parameter in accordance with the
procedure given in ISO 13528: 2005. Subsequently, robust Z Score were calculated on the basis of
the above. The test results of those participants which were found to be outliers (Z score more than
+3 or less than -3) were deleted and Robust Average of the remaining expert participants was again
calculated. This Robust average is treated as the assigned value for the concerned parameter
The Assigned Value of both the parameters thus arrived are given in Table–4.
Table 4: Assigned Values
S.No. Test Assigned
Value
Ro
bu
st
SD
of
Assig
ned
Valu
e
Un
cert
ain
ty o
f
Assig
ned
Valu
e
No
. o
f L
ab
s
co
ntr
ibu
ted
fo
r
Assig
ned
Valu
e
To
tal N
o. o
f
Accre
dit
ed
Lab
s
avail
ab
le f
or
the T
es
t
To
tal n
um
ber
of
part
icip
an
ts(*
)
1 Count of yarn removed from fabric (Ne) (2F)
14.0s 0.15 0.04 18 20 43
2 Pilling Resistance(Martindale) - Rating
3.0, 3.5 NA 0.5 8 11 31
3a Abrasion resistance (Martindale) Change in Colour - Rating
4.0 NA 0.5 10 13 31
3b Abrasion resistance (Martindale) Mass loss(%)
0.84 0.31 0.11 13 13 29
4a Breaking strength-Raveled strip (N)
1207.9 34.4 8.4 26 27 45
4b Elongation (%) at Break-Raveled strip
22.8 1.2 0.3 25 26 43
5 Tear Strength (Elmendorf) (N) 58.1 4.2 1.9 8 15 35
6 Pilling Resistance(Random tumble) - Rating
2.0, 2.5 NA 0.5 4 11 21
7 Thickness of fabric (mm) 1.01 0.06 0.01 15
$ 2 15
(*)Total participants reported valid results in the respective method $ Consensus value from all participants NA: Not Applicable
Determination of Standard Deviation for Proficiency Assessment (σ):
The robust average and the robust standard deviation (σ1) of all qualified values reported by
the participant laboratories were calculated for each of the test separately in accordance with the
procedure given in ISO 13528:2005. Subsequently, the “between-samples standard deviation (SS)” of
homogeneity testing data was compared with the standard deviation of all the participants. If SS 0.3
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σ1 , then the sample is considered as homogenous and the robust standard deviation of all the
participants is treated as Standard Deviation for Proficiency Testing. That is σ = σ1
If SS > 0.3 σ1 , then the sample is considered as heterogeneous and Standard Deviation for
Proficiency Assessment is calculated by adding allowance for heterogeneity of the sample as
stipulated in ISO 13528:2005, by using the formula
Performance Evaluation of Participants:
The performance of the individual participant was evaluated by adopting Robust Z score
technique given in ISO 13528:2005, as per the following formula:
XxZ
where x is the test result reported by the individual participant; X is the Assigned Value and σ is the
standard deviation of the Proficiency Assessment
In case of Ordinal test results the deviation of participant result by more than ½ grade
compared to Assigned Value is taken as unsatisfactory (and outliers) and all other results are taken
as satisfactory.
Test wise performance evaluation is given in Annexure.
Interpretation of Performance Comment:
Table – 5: Interpretation of Performance comment
Range Performance of Laboratory
Quantitative Results
│Z - Score│≤ 2 Satisfactory
2 <│Z - Score│< 3 Straggler
│Z - Score│≥ 3 Outlier
Ordinal Results
│Reported Value – Assigned Value │≤ ½ grade or 0.5 rating Satisfactory
│Reported Value - Assigned Value │> ½ grade or 0.5 rating Outlier
Outliers and Stragglers:
Overall performance of all the participants is good. Outliers and Stragglers are very rare and far.
The Outlier and Straggler Analysis is given in Table – 6.
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General Advise to the participants on the performance:
If the participant is found to be “Outlier”, necessary corrective action should be taken after
thorough investigation of the root cause of the problem. In case the participant is found to be
“Straggler”, the method of testing, personnel error, use of correct materials / equipments,
maintenance of environmental conditions etc., are have to be re-examined to ensure that the test
results being reported for the concerned test parameters are satisfactory
Table – 6: Outlier and Straggler Analysis
S.No Test
No
. o
f
Part
icip
an
ts
Valid
resu
lts
% o
f valid
resu
lts
No
. o
f
Str
ag
gle
rs
% o
f
Str
ag
gle
rs
No
. o
f
Ou
tlie
rs
% o
f
Ou
tlie
rs
1 Count of yarn removed from fabric (Ne) (2F) 43 42 98 3 7.1 0 0
2 Pilling Resistance(Martindale) - Rating 31 31 100 0 0 3 9.7
3a Abrasion resistance (Martindale) Change in Colour - Rating 31 31 100 0 0 0 0
3b Abrasion resistance (Martindale) Mass loss (%) 29 28 97 0 0 0 0
4a Breaking strength-Raveled strip (N) 45 42 93 1 2.4 0 0
4b Elongation (%) at Break-Raveled strip 43 42 98 1 2.4 1 2.4
5 Tear Strength (Elmendorf) (N) 35 21 60 1 4.8 0 0
6 Pilling Resistance(Random tumble) - Rating 23 21 91 0 0 6 28.6
7 Thickness of fabric (mm) 15 14 93 0 0 0 0
8 UV Protection Factor 2 2 100 0 0 0 0
Total 297 275 92 6 2.2 10 3.6
*Inclusive of Gross error and other methods.
Parameter-wise the outliers and stragglers are listed below:
Table – 7: List of Outliers and Stragglers
S.No. Test Stragglers Outliers
1
Count of yarn removed from fabric (Ne) (2F)
15021, 15024, 15025 Nil
2
Pilling Resistance(Martindale) - Rating
Nil 15011, 15032, 15036
3a
Abrasion resistance (Martindale) Change in Colour - Rating
Nil Nil
3b
Abrasion resistance (Martindale) Mass loss(%)
Nil Nil
4a
Breaking strength-Raveled strip (N)
15032 Nil
4b
Elongation (%) at Break-Raveled strip
15029 15019
5 Tear Strength (Elmendorf) (N) 15034 Nil
6
Pilling Resistance(Random tumble) - Rating
Nil 15007, 15009, 15015, 15041, 15045, 15050
7 Thickness of fabric (mm) Nil Nil
8 UV Protection Factor Nil Nil
Total 6 10
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Annexure
PERFORMANCE EVALUATION OF EACH PARTICIPANT- TEST WISE
1. LINEAR DENSITY OF YARN REMOVED FROM FABRIC
Participant Code
Reported value (Ne)
Test method adopted Z-
Score Performance
Remark
15001 14.0 IN HOUSE 0.0 Satisfactory
15002 13.9 ISO 7211 -0.5 Satisfactory
15003 14.0 IN HOUSE 0.0 Satisfactory
15005 13.7 IN HOUSE -1.4 Satisfactory
15006 14.1 IN HOUSE 0.5 Satisfactory
15007 14.1 ASTM D 1059 0.5 Satisfactory
15009 14.3 IN HOUSE 1.4 Satisfactory
15010 14.0 IN HOUSE -0.2 Satisfactory
15011 14.0 ISO 7211 0.0 Satisfactory
15012 13.8 ASTM D 1059 -1.1 Satisfactory
15013 13.9 IS 3442-2004 -0.5 Satisfactory
15014 14.1 IN HOUSE 0.5 Satisfactory
15015 13.8 IN HOUSE -0.9 Satisfactory
15016 14.2 IN HOUSE 0.9 Satisfactory
15017 13.7 IN HOUSE -1.4 Satisfactory
15018 13.8 IN HOUSE -0.9 Satisfactory
15019 13.9 IN HOUSE -0.5 Satisfactory
15020 13.8 IN HOUSE -0.9 Satisfactory
15021 14.6 ISO 7211 2.5 Straggler
15023 14.2 ISO 7211 0.7 Satisfactory
15024 13.5 IS 3442-1980 -2.3 Straggler
15025 14.6 IN HOUSE 2.7 Straggler
15026 14.2 ASTM D 1059 0.9 Satisfactory
15027 13.9 ASTM D 1059 -0.7 Satisfactory
15029 14.0 ISO 7211-5:1984 -0.2 Satisfactory
15030 14.0 IN HOUSE 0.0 Satisfactory
15031 14.1 IN HOUSE 0.5 Satisfactory
15032 13.9 IS 3442 -0.5 Satisfactory
15033 14.0 IN HOUSE 0.0 Satisfactory
15034 14.3 IN HOUSE 1.4 Satisfactory
15035 14.0 IN HOUSE 0.0 Satisfactory
15036 14.2 ISO 7211 0.9 Satisfactory
15038 13.8 ASTM D 1059 -1.1 Satisfactory
15039 13.9 IS 3442-1980 -0.5 Satisfactory
15040 14.0 IN HOUSE 0.0 Satisfactory
15041 13.8 ASTM D 1059 -0.9 Satisfactory
15043 14.0 ISO 7211 0.0 Satisfactory
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Participant Code
Reported value (Ne)
Test method adopted Z-
Score Performance
Remark
15044 14.0 ISO 7211-5 0.0 Satisfactory
15045 14.4 IN HOUSE 1.8 Satisfactory
15046 14.0 IN HOUSE 0.0 Satisfactory
15047 14.2 IN HOUSE 0.9 Satisfactory
15050 14.0 ISO 7211 0.0 Satisfactory
No. of participants 42
Maximum 14.6
Minimum 13.5
Mean 14.0
Std Deviation 0.22
Median 14.0
Mode 14.0
SUMMARY
Robust Average = 14.0
Robust SD for all valid participants (1 ) = 0.17
Between sample SD of Homogeneity testing (SS ) = 0.1362
SD for PT Scheme with allowance for the heterogeneity if any () = 0.220
Heterogeneity Accounted
Assigned Value (X) = 14.0 Ne (2F)
SD of PT Scheme() = 0.2 Remarks: The following is not included for evaluation.
Participant Code Reported Value Method Adopted Reason for rejection
15004 21.2 IS 3442 Gross Error and trivial outlier
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-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
15
00
1
15
00
2
15
00
3
15
00
5
15
00
6
15
00
7
15
00
9
15
01
0
15
01
1
15
01
2
15
01
3
15
01
4
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01
5
15
01
6
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01
7
15
01
8
15
01
9
15
02
0
15
02
1
15
02
3
15
02
4
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02
5
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02
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02
7
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02
9
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0
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1
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03
5
15
03
6
15
03
8
15
03
9
15
04
0
15
04
1
15
04
3
15
04
4
15
04
5
15
04
6
15
04
7
15
05
0
Z-S
co
re
Participant Code
Linear Density of Yarn removed from Fabric - Ne
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2. PILLING RESISTANCE (MARTINDALE METHOD)
Assigned Value : 3.0, 3.5
Participant code Reported
value (Rating) Test method adopted
Performance Remark
15002 3.5 ASTM D 4970 Satisfactory
15006 3.5 ASTM D 4970:2010 Satisfactory
15007 3.5 ASTM D 4970 Satisfactory
15008 3.5 ASTM D 4970:2010 Satisfactory
15009 3.0 ASTM D 4970:2010 Satisfactory
15010 3.0 ASTM D 4970 Satisfactory
15011 4.5 ASTM D 4970 Outlier
15012 2.5 ASTM D 4970 Satisfactory
15013 3.0 ASTM D 4970:2007 Satisfactory
15015 3.0 ASTM D 4970:2010 Satisfactory
15016 4.0 ASTM D 4970:2010 Satisfactory
15017 3.0 IS 10971:84 Satisfactory
15019 3.5 ASTM D 4970 Satisfactory
15020 3.5 ASTM D 4970:2010 Satisfactory
15022 3.5 ASTM D 4970 Satisfactory
15023 3.0 ASTM D 4970 Satisfactory
15025 3.0 ASTM D 4970 Satisfactory
15026 2.5 ASTM D 4970 Satisfactory
15027 3.0 ASTM D 4970 Satisfactory
15029 2.5 ASTM D D 4970M - 2010 Satisfactory
15030 3.5 ASTM D 4970 Satisfactory
15031 4.0 ASTM D 4970:2010 Satisfactory
15032 1.5 ASTM D 4970:2010 Outlier
15036 1.5 ASTM D 4970:2010 Outlier
15038 3.5 ASTM D 4970 Satisfactory
15040 3.0 ASTM D 4970:2010 Satisfactory
15041 3.0 ASTM D 4970 Satisfactory
15043 3.0 ASTM D 4970 Satisfactory
15044 2.5 ASTM D 4970 Satisfactory
15046 3.0 ASTM D 4970:2010 Satisfactory
15050 3.0 ASTM D 4970 Satisfactory
No. of participants 31
Frequency Distribution
Rating Frequency
1.5 2
2.0 0
2.5 4
3.0 13
3.5 9
4.0 2
4.5 1
Total 31
Remark: As the frequency distribution of expert participants is bimodal, both the ratings viz.,3.0 and 3.5 are considered as Assigned Value.
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3a. ABRASION RESISTANCE - CHANGE IN COLOUR IN 5000 MOVEMEVTS
Assigned Value: 4.0
Participant Code Reported
value (Rating)
Test method adopted Performance
Remark
15002 4.0 ASTM D 4966 Satisfactory
15007 3.5 ISO 12947 Satisfactory
15008 4.0 ASTM D 4966-2012 Satisfactory
15009 4.0 IS 12673-1 Satisfactory
15010 3.5 ISO 12947 Satisfactory
15011 4.0 ISO 12947 Satisfactory
15012 4.0 ISO 12947-2 Satisfactory
15013 3.5 ASTM D 4966 Satisfactory
15015 3.5 ISO 12947:2002 Satisfactory
15016 4.0 ISO 12947:1998 Satisfactory
15019 3.5 ISO 12947-3&4:2002 Satisfactory
15020 4.0 ASTM D 4966-2012 Satisfactory
15022 4.0 ISO 12947-3&4 Satisfactory
15023 3.5 ISO 12947 Satisfactory
15025 4.0 ISO 12947-3,4 Satisfactory
15026 4.0 ISO 12947-2 Satisfactory
15027 4.0 ASTM D 4966 Satisfactory
15029 4.0 ASTM D 4966-2010 Satisfactory
15030 3.5 ISO 12947 Satisfactory
15031 4.0 ISO 12947:1998 Satisfactory
15032 4.0 ISO 12947 Satisfactory
15033 4.0 ASTM D 4966-2012 Satisfactory
15036 4.0 ISO 12947 Satisfactory
15038 4.0 ASTM D 4966-2012 Satisfactory
15040 3.5 ASTM D 4966-2012 Satisfactory
15041 4.0 ASTM D 4966 Satisfactory
15043 3.5 ISO 12947 Satisfactory
15044 4.0 ISO 12947 Satisfactory
15045 4.0 ASTM D 4966-2012 Satisfactory
15046 4.0 ISO 12947 Satisfactory
15050 4.0 ASTM D 4966 Satisfactory
No. of participants 31
Frequency Distribution
Rating Frequency
3.5 9
4.0 22
4.5 0
Total 31
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3b. ABRASION RESISTANCE - MASS LOSS (%) AT 5000 MOVEMEVTS
Participant Code Reported value (%)
Test method adopted Z-
Score Performance
Remark
15002 0.63 ASTM D 4966 -0.5 Satisfactory
15007 0.60 ISO 12947 -0.5 Satisfactory
15008 0.50 ASTM D 4966-2012 -0.7 Satisfactory
15010 1.00 ISO 12947 0.3 Satisfactory
15011 0.50 ISO 12947 -0.7 Satisfactory
15013 0.73 ASTM D 4966 -0.2 Satisfactory
15015 0.70 ISO 12947:2002 -0.3 Satisfactory
15016 0.70 ISO 12947:1998 -0.3 Satisfactory
15019 0.30 ISO 12947-3&4:2002 -1.2 Satisfactory
15020 0.80 ASTM D 4966-2012 -0.1 Satisfactory
15022 0.50 ISO 12947-3&4 -0.7 Satisfactory
15023 0.40 ISO 12947 -1.0 Satisfactory
15025 0.90 ISO 12947-3,4 0.1 Satisfactory
15026 1.40 ISO 12947-2 1.2 Satisfactory
15027 0.77 ASTM D 4966 -0.2 Satisfactory
15029 0.40 ASTM D 4966-2010 -1.0 Satisfactory
15030 0.20 ISO 12947 -1.4 Satisfactory
15031 0.70 ISO 12947:1998 -0.3 Satisfactory
15032 1.00 ISO 12947 0.3 Satisfactory
15033 1.10 ASTM D 4966-2012 0.6 Satisfactory
15036 1.30 ISO 12947 1.0 Satisfactory
15038 1.00 ASTM D 4966-2012 0.3 Satisfactory
15040 1.10 ASTM D 4966-2012 0.6 Satisfactory
15041 0.40 ASTM D 4966 -1.0 Satisfactory
15043 0.50 ISO 12947 -0.7 Satisfactory
15044 1.40 ISO 12947 1.2 Satisfactory
15045 0.60 ASTM D 4966-2012 -0.5 Satisfactory
15046 1.10 ISO 12947 0.6 Satisfactory
No. of participants 28
Maximum 1.40
Minimum 0.20
Mean 0.76
Std Deviation 0.33
Median 0.70
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SUMMARY
Robust Average = 0.729
Robust SD for all valid participants (1) = 0.366
Between sample SD of Homogeneity testing (SS) = 0.3111
SD for PT Scheme with allowance for the heterogeneity if any () = 0.48
Heterogeneity Accounted
Assigned Value (X) = 0.84%
SD of PT Scheme () = 0.48% Remarks: The following is not included for evaluation.
Participant Code Reported Value Method Adopted Reason for rejection
15012 0.04(%) ISO 12947-2 Gross Error and trivial outlier
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
15002
15007
15008
15010
15011
15013
15015
15016
15019
15020
15022
15023
15025
15026
15027
15029
15030
15031
15032
15033
15036
15038
15040
15041
15043
15044
15045
15046
Z-S
co
re
Participant Code
ABRASION RESISTANCE - MASS LOSS (%) AT 5000 MOVEMEVTS
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4a. BREAKING STRENGTH
Participant Code Reported Value (N)
Test method adopted Z-
Score Performance
Remark
15001 1251.9 IS:1969-1:2009 1.2 Satisfactory
15002 1203.0 ISO:13934-1 -0.1 Satisfactory
15003 1152.3 IS 1969:85 (RA 2009) -1.5 Satisfactory
15004 1221.6 IS 1969 0.4 Satisfactory
15005 1188.0 IS:1969-1:2009 -0.5 Satisfactory
15006 1174.0 IS 1969:85 (RA 2009) -0.9 Satisfactory
15008 1276.0 ISO:13934-1:2013 1.8 Satisfactory
15009 1235.7 IS 1969 0.8 Satisfactory
15010 1265.2 ISO:13934-1 1.6 Satisfactory
15011 1211.0 ISO:13934-1 0.1 Satisfactory
15012 1168.9 ISO:13934-1 -1.1 Satisfactory
15013 1220.0 IS 1969-2006 0.3 Satisfactory
15014 1173.0 IS 1969 -0.9 Satisfactory
15015 1186.8 IS 1969 -0.6 Satisfactory
15016 1234.8 ISO:13934-1:2013 0.7 Satisfactory
15017 1163.1 IS 1969:85 (RA 2006) -1.2 Satisfactory
15018 1238.0 IS:1969-1:2009 0.8 Satisfactory
15020 1193.0 IS:1969-1:2009 -0.4 Satisfactory
15021 1215.0 ISO:13934-1 0.2 Satisfactory
15022 1229.0 ISO:13934-1:2013 0.6 Satisfactory
15023 1190.9 ISO:13934-1 -0.5 Satisfactory
15024 1210.0 IS 1969:1985 0.1 Satisfactory
15025 1217.0 ISO:13934-1 0.2 Satisfactory
15026 1174.3 ISO:13934-1:2013 -0.9 Satisfactory
15027 1216.0 ISO:13934-1 0.2 Satisfactory
15029 1200.0 ISO:13934-1:2013 -0.2 Satisfactory
15030 1156.6 ISO:13934-1:2013 -1.4 Satisfactory
15031 1180.0 ISO:13934-1:2013 -0.8 Satisfactory
15032 1108.6 IS 1969:85 -2.7 Straggler
15033 1170.0 IS 1969:85 (RA 2006) -1.0 Satisfactory
15034 1227.2 IS 1969:85 0.5 Satisfactory
15037 1186.0 IS 1969:85 -0.6 Satisfactory
15039 1135.6 IS 1969:1985 (RA 2006) -2.0 Satisfactory
15040 1210.8 ISO:13934-1:2013 0.1 Satisfactory
15041 1239.0 ISO:13934-1:2013 0.8 Satisfactory
15042 1237.7 IS 1969-1:2009 0.8 Satisfactory
15043 1240.0 ISO:13934-1 0.9 Satisfactory
15044 1144.5 ISO:13934-1:2013 -1.7 Satisfactory
15045 1242.5 ISO:13934-1:2013 0.9 Satisfactory
15048 1200.3 IS 1969:1985 (RA 2006) -0.2 Satisfactory
15049 1178.0 IS:1969-1:2009 -0.8 Satisfactory
15050 1234.0 ISO:13934-1 0.7 Satisfactory
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Participant Code Reported Value (N)
Test method adopted Z-
Score Performance
Remark
No. of participants 42
Maximum 1276.0
Minimum 1108.6
Mean 1202.4
Std Deviation 36.31
Median 1206.5
SUMMARY
Robust Average = 1203.1
Robust SD for all valid participants (1) = 36.83
Between sample SD of Homogeneity testing (SS) = 4.7598
SD for PT Scheme with allowance for the heterogeneity if any () = 36.83
No Heterogeneity Observed
Assigned Value (X) = 1207.9 N
SD of PT Scheme () = 36.8 N Remark: The following are not included for evaluation
Participant Code
Reported Value (N)
Method Adopted Reason for rejection
15036 >1000 ISO:13934 Specific values only feasible for evaluation 15046 >1000 IS 1969
15019 697.5 ISO:13934-1:2013 Gross Error and trivial outlier
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4b. ELONGATION (%) AT BREAK
Participant Code Reported value (%)
Test method adopted Z-
Score Performance
Remark
15001 24.9 IS:1969-1:2009 1.6 Satisfactory
15002 22.4 ISO:13934-1 -0.3 Satisfactory
15003 24.4 IS 1969:85 (RA 2009) 1.2 Satisfactory
15005 23.6 IS:1969-1:2009 0.6 Satisfactory
15006 22.0 IS 1969:85 (RA 2009) -0.6 Satisfactory
15008 21.0 ISO:13934-1:2013 -1.4 Satisfactory
15010 25.4 ISO:13934-1 2.0 Satisfactory
15011 22.6 ISO:13934-1 -0.2 Satisfactory
15012 22.8 ISO:13934-1 0.0 Satisfactory
15013 21.5 IS 1969-2006 -1.0 Satisfactory
15014 20.2 IS 1969 -2.0 Satisfactory
15015 21.0 IS 1969 -1.4 Satisfactory
15016 22.6 ISO:13934-1:2013 -0.2 Satisfactory
15017 22.3 IS 1969:85 (RA 2006) -0.4 Satisfactory
15018 22.4 IS:1969-1:2009 -0.3 Satisfactory
15019 18.5 ISO:13934-1:2013 -3.3 Outlier
15020 23.6 IS:1969-1:2009 0.6 Satisfactory
15021 24.5 ISO:13934-1 1.3 Satisfactory
15022 22.6 ISO:13934-1:2013 -0.2 Satisfactory
15023 24.0 ISO:13934-1 0.9 Satisfactory
15024 24.0 IS 1969:1985 0.9 Satisfactory
15025 21.3 ISO:13934-1 -1.2 Satisfactory
15026 22.5 ISO:13934-1:2013 -0.2 Satisfactory
15027 23.8 ISO:13934-1 0.8 Satisfactory
15029 25.7 ISO:13934-1:2013 2.2 Straggler
15030 24.8 ISO:13934-1:2013 1.5 Satisfactory
15031 22.6 ISO:13934-1:2013 -0.2 Satisfactory
15032 22.2 IS 1969:85 -0.5 Satisfactory
15033 22.4 IS 1969:85 (RA 2006) -0.3 Satisfactory
15034 25.3 IS 1969:85 1.9 Satisfactory
15036 21.7 ISO:13934 -0.8 Satisfactory
15037 22.4 IS 1969:85 -0.3 Satisfactory
15039 22.5 IS 1969:1985 (RA 2006) -0.2 Satisfactory
15040 22.8 ISO:13934-1:2013 0.0 Satisfactory
15041 23.0 ISO:13934-1:2013 0.2 Satisfactory
15042 22.5 IS 1969-1:2009 -0.2 Satisfactory
15043 23.4 ISO:13934-1 0.5 Satisfactory
15044 21.5 ISO:13934-1:2013 -1.0 Satisfactory
15045 21.4 ISO:13934-1:2013 -1.1 Satisfactory
15048 23.2 IS 1969:1985 (RA 2006) 0.3 Satisfactory
15049 22.0 IS:1969-1:2009 -0.6 Satisfactory
15050 23.7 ISO:13934-1 0.7 Satisfactory
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Participant Code Reported value (%)
Test method adopted Z-
Score Performance
Remark
No. of participants 42 Maximum 25.7 Minimum 18.5 Mean 22.8 Std Deviation 1.44 Median 22.6
SUMMARY
Robust Average = 22.8
Robust SD for all valid participants (1) = 1.33
Between sample SD of Homogeneity testing (SS) = 0.3937
SD for PT Scheme with allowance for the heterogeneity if any () = 1.33
No Heterogeneity Observed
Assigned Value (X) = 22.8%
SD of PT Scheme () = 1.3% Remarks: The following is not included for evaluation.
Participant Code Reported Value Method Adopted Reason for rejection
15004 30.75 IS 1969 Trivial outlier
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-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
15001
15002
15003
15004
15005
15006
15008
15009
15010
15011
15012
15013
15014
15015
15016
15017
15018
15020
15021
15022
15023
15024
15025
15026
15027
15029
15030
15031
15032
15033
15034
15037
15039
15040
15041
15042
15043
15044
15045
15048
15049
15050
Z-S
co
re
Participant Code
BREAKING STRENGTH OF FABRIC-RAVELED STRIP
-4.0
-3.0
-2.0
-1.0
0.0
1.0
2.0
3.0
15001
15002
15003
15005
15006
15008
15010
15011
15012
15013
15014
15015
15016
15017
15018
15019
15020
15021
15022
15023
15024
15025
15026
15027
15029
15030
15031
15032
15033
15034
15036
15037
15039
15040
15041
15042
15043
15044
15045
15048
15049
15050
Z-S
co
re
Participant Code
ELONGATION (%) AT BREAK OF FABRIC-RAVELED STRIP
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5. TEAR FORCE (N)
Participant Code Reported value (N)
Test method adopted Z-
Score Performance
Remark
15008 61.5 ASTM D 1424:2013 1.0 Satisfactory
15009 51.9 ASTM D 1424 -1.7 Satisfactory
15010 56.0 ASTM D 1424 -0.6 Satisfactory
15011 59.2 ISO 13937-1 0.3 Satisfactory
15012 56.9 ASTM D 1424 -0.3 Satisfactory
15014 61.2 ASTM D 1424 0.9 Satisfactory
15015 60.6 ASTM D 1424:2009 0.7 Satisfactory
15017 53.2 IS 6489:93 -1.4 Satisfactory
15020 54.3 ISO 13937-1:2000 -1.1 Satisfactory
15022 59.3 ISO 13937-1 0.3 Satisfactory
15024 60.0 ASTM D 1424 0.5 Satisfactory
15025 58.4 ISO 13937-1 0.1 Satisfactory
15026 54.7 ASTM D 1424 -1.0 Satisfactory
15027 60.0 ASTM D 1424 0.5 Satisfactory
15029 53.0 ASTM D 1424:2009 -1.4 Satisfactory
15034 50.6 ASTM D 1424 -2.1 Straggler
15036 62.8 ASTM D 1424 1.3 Satisfactory
15039 62.0 ISO 13937-1 1.1 Satisfactory
15041 61.9 ISO 13937-1 1.1 Satisfactory
15049 59.0 IS 6489-1:2011 0.3 Satisfactory
15050 61.3 ISO 13937-1 0.9 Satisfactory
No. of participants 21
Maximum 62.8
Minimum 50.6
Mean 58.0
Std Deviation 3.71
Median 59.2
SUMMARY
Robust Average = 58.4
Robust SD for all valid participants (1) = 3.54
Between sample SD of Homogeneity testing (SS) = 0.4021
SD for PT Scheme with allowance for the heterogeneity if any () = 3.54
No Heterogeneity Observed
Assigned Value (X) = 58.1 N
SD of PT Scheme () = 3.5 N Remark: The following are not included for evaluation
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Participant Code
Reported Value (N) Method Adopted Reason for rejection
15002 ABOVE RANGE ISO 13937-1
Specific numeric values only feasible for
performance evaluation quantitatively*
15016 >53 ISO 13937-1:2000
15019 Not Reported the results. Observation: Untearable at 6400gm
ISO 13937-1:2000 (COR 1:2004)
15021 >62.8 ISO 13937-1
15023 >62.8 ISO 13937-1
15030 >53.4 ISO 13937-1
15031 >53.3 ISO 13937-1:2000
15033 >50.2 ASTM D 1424
15040 EXCEEDS THE LIMIT NOT MENTIONED
15043 >62.8 ISO 13937-1
15044 >53.3 ISO 13937-1
15046 >64 ASTM D 1424
15013 627.8 ASTM D1424-07a Gross Error
15032 81.18 ASTM D 2261 Trivial outlier
*Depending on the equipment and operational constraints participants have different upper limit and hence the 12 participants who have reported a qualitative result cannot be considered and evaluated as a separate group.
(a) It is observed that the Coefficient of variation (%) of the 21 valid results reported by the participants for which performance has been evaluated varies from 0.0006 to 4.8 only. Thus the Repeatability of each participant is very good.
(b) A continuous length of fabric was serially numbered from 01 to 60 at equal interval and cut
them into 60 pieces to form the PT-population. From the population 10 pieces were drawn by adopting ‘Systematic Random Sampling’ for Homogeneity Testing. That is the homogeneity testing was conducted on the samples numbered 06, 12, 18, 24, 30, 36, 42, 48, 54 and 60 which represents the entire population. The homogeneity test resulted 54.4N with SD 0.73N. That is the homogeneity of population was ensured.
(c) The PT was conducted for “Tear force ACROSS WARP” only and obviously the geometric and performance properties of WARP are consistent.
In view of (a), (b) and (c) the above participants results were rejected from performance evaluation though it amounts to 40% of total participants for this test.
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
15008
15009
15010
15011
15012
15014
15015
15017
15020
15022
15024
15025
15026
15027
15029
15034
15036
15039
15041
15049
15050
Z-S
co
re
Participant Code
TEAR FORCE OF FABRIC
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6. PILLING RESISTANCE TO RANDOM TUMBLING
Assigned Value = 2
Participant Code Reported value
(Rating) Test method adopted
Performance Remark
15002 2.0 ASTM D 3512 Satisfactory
15007 3.5 ASTM D 3512 M-10e1 Outlier
15009 4.5 ASTM D 3512 Outlier
15011 2.5 ASTM D 3512 Satisfactory
15012 1.5 ASTM D 3512 Satisfactory
15015 3.0 ASTM D 3512:2010 Outlier
15020 2.0 ASTM D 3512 Satisfactory
15021 2.0 ASTM D 3512 Satisfactory
15022 2.0 ASTM D 3512 Satisfactory
15023 2.0 ASTM D 3512 Satisfactory
15026 2.0 ASTM D 3512 Satisfactory
15027 1.5 ASTM D 3512 Satisfactory
15029 2.5 ASTM D 3512/3512 M -2010 Satisfactory
15030 2.5 ASTM D 3512 Satisfactory
15032 1.5 ASTM D 3512 Satisfactory
15036 2.5 ASTM D 3512 Satisfactory
15041 3.5 ASTM D 3512 Outlier
15043 2.5 ASTM D 3512 Satisfactory
15044 1.5 ASTM D 3512 Satisfactory
15045 4.0 ASTM D 3512 M-10e1 Outlier
15050 3.0 ASTM D 3512 Outlier
No. of participants 21
Frequency Distribution
Rating Frequency
1.5 4
2.0 6
2.5 5
3.0 2
3.5 2
4.0 1
4.5 1
Total 21
Remark: The following are not included for evaluation
Participant Code Reported
Value (Grading) Method Adopted Reason for rejection
15004 4 - 5 IS 10971 Gross error. Different test which is not included in this PT Scheme. 15039 4 IS 10971-1984 (RA 1999)
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7. THICKNESS OF TEXTILE MATERIAL
Participant Code Reported
value (mm) Test method adopted Z- Score
Performance Remark
15003 1.04 IN HOUSE 0.5 Satisfactory
15004 1.02 IS 7702 0.1 Satisfactory
15005 1.02 IN HOUSE 0.2 Satisfactory
15009 0.98 ASTM D 1777 -0.5 Satisfactory
15015 0.96 ASTM D 1777:2012 -0.9 Satisfactory
15018 1.00 IN HOUSE -0.2 Satisfactory
15020 1.01 IN HOUSE 0.0 Satisfactory
15021 0.92 ASTM S 1777 -1.6 Satisfactory
15023 0.94 ASTM D 1777 -1.2 Satisfactory
15024 1.06 ASTM D 1777 0.9 Satisfactory
15026 1.01 ASTM D 1777 0.0 Satisfactory
15032 1.02 ASTM D 1777 0.2 Satisfactory
15034 1.04 IN HOUSE 0.5 Satisfactory
15039 1.05 IS 7702-1975 (RA 1999) 0.7 Satisfactory
No. of participants 14
Maximum 1.1
Minimum 0.9
Mean 1.0
Std Deviation 0.04
Median 1.0135
SUMMARY
Robust Average = 1.008
Robust SD for all valid participants (1) = 0.039
Between sample SD of Homogeneity testing (SS) = 0.0423
SD for PT Scheme with allowance for the heterogeneity if any () = 0.06
Heterogeneity Accounted
Assigned Value (X) = 1.01
SD of PT Scheme () = 0.06
Remark: The following are not included for evaluation
Participant Code Reported Value (N) Method Adopted Reason for rejection
15019 0.32 IN HOUSE Gross Error and trivial outlier
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
15003
15004
15005
15009
15015
15018
15020
15021
15023
15024
15026
15032
15034
15039
Z-S
co
re
Participant Code
THICKNESS OF TEXTILE MATERIAL
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8. UV PROTECTION FACTOR
Participant code Reported
value Test method adopted
15009 13.6 AS/NZS 4399
15028 15.0 AS/NZS 4399
No. of participants 2
As there are only two participants, the individual test results were obtained from them and their mean values compared using Stuent’s t test as follows.
Participant Code 15009 15028
1 14.70 15
2 14.13 15
3 13.05 16
4 12.58
5 13.60
Mean 13.61 15.33
SD 0.842 0.577
Combined Standard Deviation 0.503
Test Statistic t 3.422
Degrees of freedom 6
t6,0.05
1.943
Conclusion: As t > t6, 0.05, it is concluded that the results reported by the two participants are not comparable.