PRA has been supplying calibrated viscosity oils to industry for over 50 years.
The complete PRA U grade range of calibrated viscosity oils are available as (click links for more information):
Ideal for calibrating equipment or flow cups at any temperature between 20 and 25°C.The certificate supplied with each oil can include the flow time of the oil through a specified flow cup at temperatures from 20 to 25°C in 0.5°C steps.
Boxed sets of any five oils from our range of calibrated U grade viscosity oils supplied in 30ml containers. Calibration kits are very convenient for those who only need to use a few drops of oil at a time (to calibrate a cone and plate viscometer, for example).
Flow cups should be certified annually in order to ensure their compliance with the appropriate standard. PRA can certify your flow cup whether or not there is a standard available.