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...