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Testing equipment for automated
petroleum test equipment


High-throughput viscosity testing... quick results using under 1mL of sample

New Method ! ASTM D 7279 "Automated Houillon Viscosity"
and methods ASTM D 445, D 2270, D 341; IP 71, IP 226; EN3104

  • The precision of ASTM D 445 using less than 1mL of sample!
  • Viscosity range: 2 to 2000 cSt at 40ºC
  • Bath temperature from 20º to 110ºC with ±0.01ºC stability
  • High throughput - 75 samples per hour, per bath
  • Average viscosity and/or viscosity index in minutes
  • Automatic tube cleaning & drying
  • Less than 10 ml solvent used in cleaning cycle

Using a "houillon" capillary tube, ISL's VH Series viscometers automatically determine kinematic viscosity of lubricating oils, used oils, fuels, polymers and similar materials over a wide viscosity range.

Initially developed for lubricant blending facilities, research labs, and used oil verification measurements, today this method has been approved by ASTM as number D 7279. 

ISL's Models VH 1 and VH2 each require less than 1 milliliter of sample, have an average run time of 60 seconds, and deliver results with the precision of ASTM D 445. Running under custom 32-bit, multi-tasking Windows-based software, users can centrally monitor of up to 16 capillaries spanning up to 4 baths. Results are displayed, saved in the database, printed or sent directly to a LIMS following user-defined protocol. 

Model VH 1 viscometer integrates a single solvent capacity for tube cleaning. 

Model VH 2 accommodates two solvents, offering more flexibility in solvent selection and more efficient tube cleaning and drying. As all VH 2 parts which come into contact with sample or solvents are made of glass, stainless steel, brass, Teflon or Kalrez, aggressive solvents are safe to use.

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