Certified Standard Oils
Article No. 4003
Viscosity Standard C60
Procedure
- Place flow cup in a precisely horizontal position using ring stand or temperature control jacket
- Close orifice
- Pour in test liquid
- Draw a clean glass plate over the rim of the cup, removing superfluous liquid into the overflow reservoir and closing the cup
- Remove glass plate horizontally
- Open the orifice and start the stopwatch simultaneously
- Stop the watch with the first break in the efflux stream
- Repeat the measurement three times, each with a new sample of the same material