General Purpose Viscosity Reference Standards

Certified in strict accordance with ASTM D2162, the primary method for viscosity standards manufacture. Dual  certified to the International Standards BS EN ISO / IEC 17025 and ISO Guide 34 under our UKAS accrediatation. We test at Primary level using master viscometers in accordance with ASTM D2162 to ensure the lowest uncertainty of measurement thus providing standards […]


KESSLER’S rigid manufacturing, tolerances and inspection ensures the production of ASTM thermometers that are well within the dimensional  and accuracy specifications of E-1 and E-77 of ASTM. View More Products

CONOSTAN® Viscosity Standards

The same product reliability and stability that our customers trust in metallo-organic standards are now available in General Purpose Viscosity standards. These certified, mineral oil based, viscosity standards were developed for calibration and verification of all types of viscometers, including glass capillary viscometers, rotational viscometers, cup and falling ball viscometers. All standards are traceable to […]