Glass Capillary Viscometers
Size A Nominal constant 0.003 Viscosity range (mm²s-¹,cSt) 0.9 to 3
BS/U Tube Viscometers, with UKAS certificate.
ISO 3104, ISO 3105, ASTM D 445, ASTM D 446, BS 188
Suitable for the measurement of transparent liquids, nominal overall length 300mm,approx sample size 13-40ml.
PSL viscometers are constructed from low expansion borosilicate glass and the precision bore tubing used for the capillary section is held to a close tolerance of ±0.01mm. Calibration is carried out in the PSL Calibration Laboratory which has shown that it meets the requirements of ISO 17025, by independent UKAS accreditation. The PSL Calibration Laboratory maintains its own primary viscosity scale, based upon the internationally agreed value of distilled water at 20°C of 1.0034mm2/s. Each calibration performed is one step away from this primary scale, producing very low uncertainties of measurement.