Cannon-Fenske Opaque Viscometer Tube, #350, 100 to 500 cSt, Certified

A popular reverse flow instrument that incorporates two separate timing bulbs allowing a check of results in the same test. Requires a bath depth of 10 inches and a sample volume of approximately 12 mL. Supplied either calibrated at 40°C and 100°C (certified) or non-certified.