CFOC- 25 Calibrated

The Cannon-Fenske Opaque Viscometer is a reverse-flow type, for measurement of kinematic viscosity of dark Newtonian liquids according to ASTM D445 and ISO 3104. It permits measurement of liquids whose meniscus cannot be seen at the timing marks when using a Cannon-Fenske Routine-type viscometer. Used to measure kinematic viscosity of liquid (cutback) asphalts and road oils at 60°C (140°F) in range of 30 to 6000 centistokes according to ASTM D2170. Also used to study lubricating oils at low temperatures when investigating the effect of various additives on lubricating and hydraulic oils. External pressure can be applied to vary shear stress and shear rate. Specifications conform to ASTM D446 and ISO 3105.

Minimum sample volume is 12 mL. Minimum bath depth is 229 mm (9 in).

Viscometer is calibrated at 40 °C and is provided with a certificate of calibration and instruction sheet. See expanded uncertainty for more information.

Approximate constant is 0.002 cSt/s and range is 0.4 to 2 cSt.
Viscometers with special constants are available by special order at additional cost.

Holder is sold separately. For holder, see 9726-M50 and 9726-M53. For replacement micro stoppers, see 9726-N98.