AST 445-B - Cannon Fenske Opaque


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A popular reverse flow viscometer that has two separate timing bulbs allowing a check of results in the same test. Requires a minimum bath depth of 10 inches and a sample of 12mL. Each viscometer has a permanent serial number and is supplied with a calibration certificate indicating the constant of that tube at 40°C and 100°C. Recertification available.
• ASTM Method: D445
Part # Size Nominal Constant Viscosity Range (cSt.)
445-1B 25 0.002 0.4 to 2
445-2B 50 0.004 0.8 to 4
445-3B 75 0.008 1.6 to 8
445-4B 100 0.015 3 to 15
445-5B 150 0.035 7 to 35
445-6B 200 0.1 20 to 100
445-7B 300 0.25 50 to 200
445-8B 350 0.5 100 to 500
445-9B 400 1.2 240 to 1,200
445-10B 450 2.5 500 to 2,500
445-11B 500 8.0 1,600 to 8,000
445-12B 600 20.0 4,000 to 20,000
445-13B 700 100.0 20,000 to 100,000