ASTM D-445-446, ASTM D2515, ISO 3104-3105 and UNE 400313 Cannon-Fenske Opaque Viscometers (reverse flow type) are used for dark Newto- nian liquids; especially suitable for liquids so dark in colour that cannot be seen in a Cannon-Fenske routine viscometer. Also used to study shearing stress and shearing rate. Sample volume: aprox. 12 ml. Precision: ±0.3%. Value indicated at 40ºC and 100ºC in both bulbs.
All capillary viscometers are supplied with the calibration certificate issued in accor- dance with the conditions of accreditation granted by a National Metrological Register which has assessed the measurement capability of the laboratory, the test uncertainty and its traceability to recognized international standards UKAS.
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