High quality ASTM Hydromoters, designed for petroleum testing. Manufactured in the USA, under strict specifications.

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W. L. Walker is an 80 year old manufacturer of gauging equipment and sampling equipment, which includes oil centrifuges and Karl Fischer titrators to test basic sediment and water, Tulsa oil thiefs, oil samplers, hydrometers, mercury, digital, woodback, a

ICL Calibration Laboratories, Inc, an ISO/IEC 17025 and ANSI/NCSL Z540-1Accredited calibration laboratory. Thermometers, Hydrometers, Mass (Laboratory Weights) Volumetric Glassware.