AST 445-A - Cannon Fenske Routine


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The most widely used type of viscometer in the petroleum industry. Requires a minimum bath depth of 8 inches and a sample of 7mL. 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.)
445-1A 25 0.002 0.4 to 2
445-2A 50 0.004 0.8 to 4
445-3A 75 0.008 1.6 to 8
445-4A 100 0.015 3 to 15
445-5A 150 0.035 7 to 35
445-6A 200 0.1 20 to 100
445-7A 300 0.25 50 to 200
445-8A 350 0.5 100 to 500
445-9A 400 1.2 240 to 1,200
445-10A 450 2.5 500 to 2,500
445-11A 500 8.0 1,600 to 8,000
445-12A 600 20.0 4,000 to 20,000
445-13A 650 45.0 9,000 to 45,000
445-14A 700 100.0 20,000 to 100,000