40.052 TOC ANALYSER, MICROPROCESSOR CONTROLLED

Approval Date: January 2008 Version: 2

Purpose The TOC Analyser breaks down all the organically bound carbon molecules

to single carbon unit that can be measured quantitatively. To analyse water samples for aggregate carbon content.

Conditions and RequirementsThe instrument shall be compatible with the climatic and other environmental conditions of Indian laboratories.

Specifications

Description Microprocessor-controlled analyser with facility for direct measurement of Total Carbon (TC) and Total Organic Carbon (TOC) in aqueous samples and suspensions,and purgeable organic carbon (POC) in samples where purging is possible,having capability for accepting samples containing suspended solids up to 500 m size

Method High temperature catalytic combustion with adjustable temperature range at least up to 900 oC± 2 oC drift

Non-dispersive infrared (NDIR) detector system

Result output options

Computer screen Printer( if not in-built) and facility for printer port ASCII file transferable to floppy

Data processing Linearisation Baseline correction Selection of best calibration curve Automatic exclusion of anomalous values Statistical evaluation, like SD, CV

Operation and Performance

Measuring range : 1 mg/L to at least 500 mg/L of Carbon

Precision: within 3% Detection Limit: at least 500 ppb Carbon Linearity: 1% of calibrated range

Power supply Analyser: 240 volts, 50 Hz 10% Auto-sampler: 240 volts, 50 Hz 10%

Carrier Gas Nitrogen or Air of high purity

Equipment Specification: TOC ANALYSER, MICROPROCESSOR CONTROLLED

Version 2 40.052-1/2

Sample introduction options

Manual loading through sampling boat for samples with high suspended matter(> 100 mg/l), and syringe injection or automatic capillary suction

Automatic with auto-sampler

Accessories Auto-sampler Micro-litre syringe 250 L and 2500 L Gas cylinder with purified Nitrogen or Air as recommended with regular(2-

stage) and necessary tubings and connectors Printer (if not provided as in-built) Operation and maintenance manual in English Dust cover Spares and consumables for two years’ operation for each of the following:

Main system Auto sampler Printer

Analytical manual including applications for TC ,TOC and POC measurements

Instruction and Service manual with one set of the required tools Parts catalogue Application softwares in English Trouble shooting charts

Equipment Specification: TOC ANALYSER, MICROPROCESSOR CONTROLLED

Version 2 40.052-2/2