Poulten Selfe & Lee Ltd. manufactures a comprehensive range of calibrated precision glass capillary kinematic viscometers for both manual and automated use. These instruments are used in laboratories across the world and enjoy a high reputation for quality of workmanship and accuracy of calibration.
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.
Within this catalogue are details about the following viscometers…