sentry equipment corp sampling solutions specialty heat exchangers gas and liquid sampling...
TRANSCRIPT
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Sentry Equipment CorpSentry Equipment CorpSampling Solutions • Specialty Heat Sampling Solutions • Specialty Heat ExchangersExchangers
Gas and Liquid Gas and Liquid Sampling Sampling
ApplicationsApplications
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Applications ReviewApplications Review
• Refinery • Chemical• Wastewater• Mining Slurry• Pharmaceutical• Plastics• Milling and other
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Refinery ApplicationsRefinery Applications
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RefiningRefining
An oil refinery is an industrial process plant where crude oil is processed and refined into useful petroleum products.
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Refinery ProcessRefinery Process
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Common Process TermsCommon Process Terms
• LSRG = light straight run gasoline• LAGO = light atmospheric gas oil• HSRG = heavy straight run gasoline• CVGO = combined vacuum gas oil• LGO = light gas oil• CGO = combined gas oil• HGO = heavy gas oil• DHGO = Desulfurized or distilled heavy gas oil• KERO = kerosene• DLGO = Desulfurized or distilled light gas oil• CLAGO = combined light atmospheric gas oil• LAGO = light atmospheric gas oil
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Refinery Process SimplifiedRefinery Process Simplified
•Separation•Conversion•Purification
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CDU – Crude Distillation UnitCDU – Crude Distillation Unit
• CDU - an atmospheric pressure distillation tower. This unit accepts a variety of crude oils and distills them into the primary products including LPG, naphtha, kerosene, light gas oil and refined crude
• Heated crude condenses at various levels in the tower
• 250f• 150 psig
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VDU – Vacuum Distillation UnitVDU – Vacuum Distillation Unit
• VDU or vacuum distillation unit is a vacuum distillation tower. This unit accepts “reduced” crude processed by the CDUs and distills them into the primary products including LPG, naphtha, kerosene, light gas oil and refined crude
• 700 F typical• 100 psig
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VBC – Visbreaking UnitVBC – Visbreaking Unit
• VBC or Visbreaker is a thermal cracking unit. This unit accepts vacuum tower “resid” or the very viscous vacuum tower bottoms and uses high heat (800 F) to crack the hydrocarbons into fuel oil, naphtha and light gas oil
• 800 F typical• 100 psig• Typically a patented
process (UOP, shell)
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HTU – Hydrotreater UnitHTU – Hydrotreater Unit
• HTU or Hydrotreater uses a recycled hydrogen stream and catalyst to convert sulfur compounds to hydrogen sulfide, nitrogen to ammonia and aromatic hydrocarbons to stronger hydrocarbons. This unit accepts vacuum tower light and heavy gas oil and converts them to gasoline, kerosene and naphtha
• 200 F typical• 200 PSIG liquids• 1300 PSIG gases
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CRU – Catalytic UnitCRU – Catalytic Unit
• CRU or catalytic reforming unit removes oxygen, nitrogen and sulfur from naphtha that contaminates the unit’s catalyst and then converts it to gasoline
• Up to 500 F typical• 200 PSIG liquids• Typically a
patented process (“Unifiner”, etc.)
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SRU – Sulfur Recovery UnitSRU – Sulfur Recovery Unit
• SRU or sulfur recovery unit converts hydrogen sulfide into elemental sulfur
• Up to 200 F typical• 100 PSIG liquids
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FCCU – Fluid Catalytic Cracking FCCU – Fluid Catalytic Cracking UnitUnit
• Fluid catalytic cracker (FCC) uses high temperature and catalyst to crack heavy gas oil mostly into gasoline. Hydrocracking uses catalysts to react gas oil and hydrogen under high pressure and high temperature to make both jet fuel and gasoline
• Up to 200 F typical• 100 PSIG liquids
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Polymerization UnitPolymerization Unit
• Polymerization in the petroleum industry is the process of converting light olefin gases including ethylene, propylene, and butylene into hydrocarbons of higher molecular weight and higher octane number that can be used as gasoline blending stocks.
• Polymerization combines two or more identical olefin molecules to form a single molecule with the same elements in the same proportions as the original molecules. Polymerization may be accomplished thermally or in the presence of a catalyst at lower temperatures.
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Alkylation UnitAlkylation Unit• Alkylation combines
low-molecular-weight olefins (primarily a mixture of propylene and butylene) with isobutene in the presence of a catalyst, either sulfuric acid or hydrofluoric acid
• For fuels blending• Various process
methods
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Other Processing UnitsOther Processing Units
• Amine plant Amine removes sulfur and other impurities
• Hydrogen plant Recovers hydrogen from the processes and
stores it along with additional H2 for hydrotreating
• LPG - liquid petroleum gas plant Recovers petroleum gas products, refines them
and blends them for distribution as a liquid• MTBE – methyl – tertiary- butyl- ether plant
Generates MTBE from methanol and process gasses
Used as a fuel additive
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Typical Sampling Points and Typical Sampling Points and SamplesSamples
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CDU – Crude Distillation UnitCDU – Crude Distillation Unit
Sample Name
Sample Constituents
Phase Temp (F)
Pres.psig
Recommend Sampler Problems/Concerns
Observed Samples
Desalter In Crude Oil Liquid 90 70 MVD Liquid Sampler Product waste, environmental, messy
Desalter Out Desalted Crude Oil
Liquid 200 to 250
70 MVD Liquid Sampler Fumes from chemicals added to break the oil water emulsion (Betz W906), The Betz product requires PPE including respirator if the chemical is about 220 F. Cooler is inefficient and suffers from corrosion. Samples are sometimes hot.
Desalter water
Water, steam, oil
Liquid/Vapor
200 130 MVD Liquid Sampler Sample is too hot when a proper flow rate is attained; long sample line runs in 1” O.D. pipe
LSRG Gasoline Liquid 100-200
150 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
HSRG Gasoline Liquid 100-200
150 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
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CDU – Crude Distillation UnitCDU – Crude Distillation Unit
LGO Oil Liquid 100-200
150 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
HGO Oil Liquid 100-200
150 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
KERO Kerosene Liquid 100-200
150 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
Resid Out Bottoms Viscous Liquid
90 40-60
MVD Liquid Sampler Fumes, mess
Caustic Soda Caustic Soda in water
Liquid 100 100 MVD Liquid Sampler Hazardous, “representativeness” of sample
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VDU – Vacuum Distillation UnitVDU – Vacuum Distillation UnitSample Name Sample
ConstituentsPhase Temp
(F)Press. (psig)
Recommended Sampler Problems/Concerns
Observed Samples
Gas Oil Oil Liquid 100-200
150 MVD Sampler Product waste, environmental, messy
KERO Kerosene Liquid 100-200
150 MVD Sampler Temperature, “representativeness” of sample, fumes
Blended Resid Oil, Vacuum tower bottoms
Liquid 200 100 Heavy liquids sampler Sample is too hot when a proper flow rate is attained; long sample line runs in 1” O.D. pipe
Vacuum tower bottoms
Oil, tar Liquid 540 100 Heavy liquids sampler Sample is too hot when a proper flow rate is attained; long sample line runs in 1” O.D. pipe, location of sample point traps operator, splashes, drain plugging
Sour Gas Oil Oil with H2S Liquid 708 46 MVD Sampler Temperature, “representativeness” of sample
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VDU – Vacuum Distillation UnitVDU – Vacuum Distillation UnitBoiler Blowdown
Water Liquid 300 150 SL Panel Temperature, “representativeness” of sample, fumes
HVGO Oil Liquid 100-200
150 MVD Sampler Temperature, “representativeness” of sample, fumes
Naphtha Naphtha Liquid 100-200
150 MVD Sampler Temperature, “representativeness” of sample, fumes
CLAGO Light Gas Oil Liquid 100-200
150 MVD Sampler Temperature, “representativeness” of sample, fumes
CVGO Heavy Gas Oil Liquid 100-200
150 MVD Sampler Temperature, “representativeness” of sample, fumes
LAGO Light Gas Oil Liquid 100-200
150 MVD Sampler Temperature, “representativeness” of sample, fumes
Sour Water Water + H2S Liquid 125 60 MVD Sampler Temperature, “representativeness” of sample, H2S fumes
Resid Out Bottoms Viscous Liquid
90 40-60
Heavy liquid sampler Fumes, mess
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VDU- VisbreakerVDU- Visbreaker
Sample Name Sample Constituents
Phase Temp (F)
Press. (psig)
Recommend Sampler Problems/Concerns
Observed Samples
Visbreaker bottoms
Oil, tar Liquid 460 100 Heavy liquid sampler Sample is too hot when a proper flow rate is attained; long sample line runs in 1” O.D. pipe, location of sample point traps operator, splashes, drain plugging
Visbreaker off gas
Hydrocarbon gas + H2S
Gas 100 40 MCL/MCG sampler “representativeness” of sample, fumes, difficult sample to obtain
LVGO Light Gas Oil Liquid 100-200
100 MVD Liquids sampler Temperature, “representativeness” of sample, fumes
CVGO Heavy Gas Oil Liquid 250 100 MVD Liquids sampler Temperature, “representativeness” of sample, fumes
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HTU- HydrotreaterHTU- HydrotreaterSample Name Sample
ConstituentsPhase Temp
(F)Press. (psig)
Recommended Sampler Problems/Concerns
Observed Samples
KERO Kerosene Liquid 100-200
80
MVD Liquid Sampler Temperature,
“representativeness” of sample, fumes
Naphtha Naphtha Liquid 100-200
80 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
DCGO Gas Oil Liquid 100-200
50 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
DHGO Heavy Gas Oil Liquid 200 180 MVD Liquid Sampler Temperature, “representativeness” of sample, fumes
DLGO Light Gas Oil Liquid 200 180 MVD Liquid Sampler Temperature, “representativeness” of sample,
Hydrogen H2 Gas Ambient
1300 MCL/MCG sampler Pressure, “representativeness” of sample, explosive
Recycled Process Gas
H2 + H2S Gas 100-200
1200 MCL/MCG sampler Pressure, “representativeness” of sample, explosive
RX Effluent Oil + Gas + H2S Multi-phase
100-200
100 MCL/MCG sampler Pressure, “representativeness” of sample, fumes
Refractionater Off Gas
CH4 Gas 100 6 MCL/MCG sampler Pressure, “representativeness” of sample, flammable
Charge LVGO + HVGO Liquid 100-200
80
MVD Liquid Sampler Temperature,
“representativeness” of sample, fumes
Condensate Water Liquid 100-200
100 MVD Liquid Sampler Temperature, “representativeness” of sample
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SRU – Sulfur Recovery UnitSRU – Sulfur Recovery Unit
Sample Name
Sample Constituents
Phase Temp (F)
Press. (psig)
Recommended Sampler Problems/Concerns
Observed Samples
Sour Gas H2S Gas 100-200
15 MCL/MCG Sampler Temperature, “representativeness” of sample, fumes, ammonia salts
Amine Acid Gas
Amine Gas Gas 200 15 MCL/MCG Sampler Temperature, “representativeness” of sample, fumes, ammonia salts
Hydrogen Sulfide
H2S Gas 100-200
150 MCL/MCG Sampler/Drager tube sampler
“Representativeness” of sample, fumes
Condensate Water Liquid 100-200
100 MVD Liquid Sampler Temperature, “representativeness” of sample
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CRU – Catalytic Reformer UnitCRU – Catalytic Reformer UnitSample Name Sample
ConstituentsPhase Temp
(F)Press. (psig)
Recommended Sampler Problems/Concerns
Observed Samples
*Unifiner Bottoms
Aromatics, Paraffins, Naphins, Olefins
Liquid 210 140 Heavy liquid sampler, ISOLOK®
Temperature, “representativeness” of sample, fumes, waste (6-8 liters per sample)
Unifiner Charge Kero or Oil Gas
Liquid 100 500 MVD liquid sampler High pressure, poor location
Unifiner charge Naphtha Liquid 210 140 MVD liquid sampler Temperature, “representativeness” of sample, fumes, waste (6-8 liters per sample)
Unifiner stripper bottoms
Aromatics, Paraffins, Naphins, Olefins
Liquid 210 140 MVD liquid sampler Temperature, “representativeness” of sample, fumes, waste (6-8 liters per sample)
Unifiner stripper off gas
Hydrocarbon gas + H2
Gas 100 380 MCL/MCG Sampler Representativeness” of sample, explosive, waste
Platformer Recycle Gas
70% H2 Gas 100 380 MCL/MCG Sampler Representativeness” of sample, explosive, waste
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LPG – Liquid Petroleum Gas UnitLPG – Liquid Petroleum Gas UnitSample Name Sample
ConstituentsPhase Temp
(F)Press. (psig)
Recommended Sampler Problems/Concerns
Observed Samples
Depropanizer Tops
Hydrocarbon gas + H2S
Gas Unk Unk MCL/MCG Sampler Hazardous, representative
Depropanizer Bottoms
Hydrocarbon gas + H2S
Gas Unk Unk MCL/MCG Sampler Hazardous, representative
Caustic Soda Sodium Hydroxide
Liquid Unk Unk MVD Liquid sampler Hazardous, representative
Depropanizer Off gas
Hydrocarbon gas + H2S
Gas Unk Unk MCL/MCG Sampler Hazardous, representative
Deethanizer off gas
Hydrocarbon gas + H2S
Gas Unk Unk MCL/MCG Sampler Hazardous, representative
Condensate Water Liquid Unk Unk SL Panel
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Amine UnitsAmine Units
Sample Name Sample Constituents
Phase Temp (F)
Press. (psig)
Recommended Sampler Problems/Concerns
Observed Samples
Lean Amine DEA, H2S Liquid Unk Unk MVD Liquid Sampler Representativeness” of sample, health risk
Rich Amine DEA, H2S Liquid Unk Unk MVD Liquid Sampler Representativeness” of sample, health risk
Regen Reflux DEA, H2S Liquid Unk Unk MVD Liquid Sampler Representativeness” of sample, health risk
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Simplified Refinery ProcessSimplified Refinery Process
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Other Processing UnitsOther Processing Units
• Hydrogen plant
MCL/MCG sampler• LPG - liquid petroleum gas plant
MCL/MCG sampler with outage volume• MTBE – methyl – tertiary- butyl- ether plant
MVD sampler• Marine terminals
ISOLOK®• Tank farms
ISOLOK® Back purge tank sampler
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Reasons Refineries SampleReasons Refineries Sample
• Confirm unit operation
Quality control and custody transfer between units and customers
• Environmental control and compliance• Process control (catalyst, heat exchanger, unit
performance) “did I remove enough sulfur?” “Did I get enough C & H out?”
• Waste water treatment loading
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Keys to Refinery SamplingKeys to Refinery Sampling
• Speed loop• Open • Cooling (60 C - 149 C)• Pressure reduction
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Typical Materials SampledTypical Materials Sampled
Refinery Petrochemical/Chemical Cracked Gases Aromatics Liquids Products Organics Plastics Inorganics Fuels
Acetylene Benzene Paraffins Gasoline Acids Monomers Nitric Acid Gasoline
Propylene Toluene Naphthalene Kerosene Alcohols Solvents BTX
Butane Xylenes Gas-Oils Oils Aldehydes
Naphthalene Bottoms Amines
Aromatics
Glycols
Ketones
Phenols
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Keys to Refinery SamplesKeys to Refinery Samples
• Speed loop• Open• Cooling (60 °C – 149 °C)• Pressure reduction
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Chemicals/PetrochemicalsChemicals/Petrochemicals
• Acetic Anhydride– Methanol feedstock– Used to make cellulose acetate and
plastics– Aspirin & pharmaceuticals
• Hazardous to breathe and skin contact• Corrosive• MVD, MFV, MIL
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Chemicals/PetrochemicalsChemicals/Petrochemicals
• Methanol– Feedstock is coal and natural gas– Used to make acrylic polymers and
solvents• MVD, MCG
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Chemicals/PetrochemicalsChemicals/Petrochemicals
• Acetic acid– Base for aldehydes– Primary production in Asia is for use
in composite wood adhesives and other adhesives
• MVD, MIL, MFV
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Chemicals/PetrochemicalsChemicals/Petrochemicals
• Monostyrene– Plastics
• MFV, MVD
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Chemicals/PetrochemicalsChemicals/Petrochemicals
• PX (Paraxylene)– Feedstock is refinery reformate
gases– Benzene– Primary use: Polyester
• MFV, MVD, MCG
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Why Use Sentry Samplers?Why Use Sentry Samplers?
• Operator safety• Environmental safety• Sample is representative of the process• Easy operation• Low maintenance• Eliminates spills
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Industry TrendsIndustry Trends
• North America– Government low sulfur fuels rules – now and on-going– Local environmental and emission requirements –
California (bay area air quality management district)• International
– Want to meet north America’s rules to sell to market• All
– Crude is increasingly sour (high in sulfur)– Crude is increasingly harder and more expensive to
get– See above
• New processes are being developed to meet the new low sulfur requirements and to make sulfur removal more efficient
• Fuel blending
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MVD Sampler With Box and MVD Sampler With Box and HeaterHeater
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MVD Sampler With Sample MVD Sampler With Sample CoolerCooler
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MFV SamplerMFV Sampler
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MCL SamplerMCL Sampler
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MCG Sampler for GasesMCG Sampler for Gases
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Wastewater ApplicationsWastewater Applications
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Wastewater – Process flow
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Typical Sampling Points Typical Sampling Points
• Outlet of settling tank
• Solids outlet of clarifier
• Outlet of digester
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Why Sample in a Wastewater Why Sample in a Wastewater Plant? Plant?
• Control solids ratios at the digesters – 70% of plant costs deal with the
removal of solids– Digesting sludge reduces solids volumes
thus, less to incinerate• Improve overall plant efficiency• Cost control• Truck load out verification
– Hauling costs are based on lbs of liquid– Control the concentration of solids
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Challenges With Sampling in a Challenges With Sampling in a
Wastewater PlantWastewater Plant
• Stinky and sloppy job– Spigot under pressure = VERY MESSY!
• Manual samples are not representative due to human variances and operators attempt to reduce messes
• Dozens of sampling points result in high labor costs and inaccuracies (due to inconsistent composite samples)
• Ergonomics (the ideal sample point is not always located in an easily reachable location)
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• ISOLOK® is the only sampler that can effectively sample sludge from a pressurized line
• Automatically captures fixed sample volume at fixed time intervals providing uniformity and consistency of sample for process control (elimination of human error)
• Unit is simple, safe, and reliable• Clean (eliminates material spillage)• VERY low labor costs
– Each MANUAL grab sample typically takes 10 minutes (including clean up) every couple of hours
– Sampling with the ISOLOK® typically only requires operators to collect the containers ONCE per day!
Why the Why the ISOLOK®ISOLOK®? ?
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Mining SlurryMining Slurry
• Abrasive• Corrosive due to acids, bases used to
extract minerals• Particle size
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ISOLOK®ISOLOK® in Shell Oil Sands in Shell Oil Sands
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Pharmaceutical ApplicationsPharmaceutical Applications
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Typical Pharmaceutical Process FlowTypical Pharmaceutical Process Flow
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Typical Pharmaceutical Process FlowTypical Pharmaceutical Process Flow
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Typical Pharmaceutical Process FlowTypical Pharmaceutical Process Flow
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Typical Sampling Points in a Typical Sampling Points in a Pharmaceutical PlantPharmaceutical Plant
• Reactor vessels – Top Reactor Sampler
• Pipes/tanks – MBP–Tank farms–Process piping
• Solvent recovery - MVD
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Reactor Vessel Sampling Reactor Vessel Sampling
• ISOLOK®• Top reactor
sampler• Back purge tank
sampler• HPI sampler
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Reactor Vessel Sampling Reactor Vessel Sampling
• ISOLOK®• Top reactor
sampler• Back purge tank
sampler• HPI sampler
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Reactor Vessel Sampling Reactor Vessel Sampling
• ISOLOK®• Top reactor
sampler• Back purge tank
sampler• HPI sampler
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Reactor Vessel Sampling Reactor Vessel Sampling
• ISOLOK®• Top reactor
sampler• Back purge tank
sampler• HPI sampler
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Pipe / Tank SamplingPipe / Tank Sampling
• Incoming raw material at truck unloading station – Generally sample for custody transfer reasons
• Tank farm– Sampling of individual ingredients prior to
transfer to the make tank
• Process piping – Quality control checkpoints along the process
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Pipe / Tank SamplingPipe / Tank Sampling
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Pipe / Tank SamplingPipe / Tank Sampling
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Solvent RecoverySolvent Recovery
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Why Sample in a Why Sample in a Pharmaceutical Plant?Pharmaceutical Plant?
•Custody transfer •Process control•Chemical analysis
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Challenges With Sampling in a Challenges With Sampling in a Pharmaceutical PlantPharmaceutical Plant
• Obtaining a representative sample from a lined reactor with high process temperature and pressure / vacuum
• Extracting sample from a device with a moving agitator
• Often requires special materials of construction– Hastelloy, titanium, AL6XN, etc
• Many sample points require “closed” sampling to eliminate operator exposure to hazardous conditions
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• Wide variety of materials of construction available to satisfy process conditions – Special alloys– Seal materials
• Ability to offer closed sampling solutions when required – Needle/septum samplers– ISOLOK®® - exchanged air is returned to
process through sample annulus
Why Sentry Samplers? Why Sentry Samplers?
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Plastics ApplicationsPlastics Applications Liquid Resin
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Liquid ResinLiquid Resin
High performance liquid resin is used in such things as bowling balls, boat hulls, etc.
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Challenges With Sampling in a Challenges With Sampling in a
Plastics Plant?Plastics Plant?
• Pressure or vacuum isolation• Viscosity• Carry over• Sample port/valve plugging• Temperature
– During and after sample
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Typical Sample PointTypical Sample Point
• Sample from a jacketed reactor
• Sample point is located in a recirculation/speed loop
• Sample must remain hot to avoid setting
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Liquid ResinLiquid Resin• Sampler is located in an
enclosure and is heat jacketed
• Sample drops into a container and is allowed to cool and set
• Customer takes the sample back to lab and re-melts for analysis
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• Ability to handle high viscosity fluids• Easily heat jacketed• Can withstand high pressures and
temperatures while isolating the process and environment from each other
• Automatically takes fixed volume of material at fixed time intervals
• Simple, safe, and reliable• Clean (eliminates material spillage)• VERY low labor costs• Provides accurate verification for plant
control
Why the Why the ISOLOK®ISOLOK®? ?
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Milling and other ApplicationsMilling and other Applications
• High fructose syrups (corn, beet)• Soy oil refining process• Byproduct streams• Process waste streams
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Why Sample in Milling Why Sample in Milling Processes? Processes?
• Quality Assurance• Custody transfer• Process control• Effluent discharge regulations
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Why Sample in Milling Why Sample in Milling Processes? Processes?
• 3-A Designated Samplers– M4KSA– MSA– MSD– MSC– MSE
• FDA Components; Seals and materials
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Challenges With Sampling - Challenges With Sampling - Milling ProcessesMilling Processes
• Process flow volume can vary so sampling frequency must vary accordingly
• Process chemicals require exotic materials for wetted components
• Manual samples are not representative due to human variances and operators attempt to reduce messes
• Dozens of sampling points result in high labor costs and inaccuracies (due to inconsistent composite samples)
• Ergonomics (not always feasible to sample proportionally with the operation of other process equipment)
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• Simple, safe, and reliable• Uniformity and consistency of sample• Elimination of human error• Clean (eliminates material spillage)• Can be controlled to proportionally
operate with other process equipment • Provides accurate verification for plant
and governmental control
Why the Why the ISOLOK®ISOLOK®? ?
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Dairy ApplicationsDairy Applications
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Typical Sampling Points in Typical Sampling Points in Dairy Application Dairy Application
•Raw milk receiving at truck unloading dock –Close to milk pump discharge
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Why Sample in Dairy Applications?Why Sample in Dairy Applications?
• Payment calculation for farmer– Butter fat content– Protein– Other solids
• Bacteria level• Hormone levels (BGH)• Antibiotics
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Challenges With Sampling in Dairy Challenges With Sampling in Dairy ApplicationsApplications
• Equipment must be 3-A compliant – (Section 59-00 of 3-A code)
• Must be easily removed and cleaned without the use of tools
• Sample should be taken proportional to flow rate to ensure sample is representative of the entire truckload
• May require sampler to turn on/off with milk pump
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• Sentry is the only U.S. Based manufacturer with section 59-00 3-A approval – (Model M4-KSA and MSA samplers)
• Unit can be easily removed and cleaned without the use of tools
• Sampler automatically takes small fixed volume per stroke (typically 3cc) frequently throughout the entire truck unload process to ensure sample composite is representative of the entire truckload
Why the Why the ISOLOK®ISOLOK®? ?
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Dairy ApplicationsDairy Applications
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Questions?Questions?