Certified Standard Oils
Article No. 4001
Viscosity Standard C20
Technical Attributes
-
- Kinematic Viscosity
- 34 cSt
-
- Zahn Cup No.
- 1
-
- Zahn Cup Drain Time
- 60 sec
-
- Ford Cup No.
- 2
-
- Ford Cup Drain Time
- 42 sec
Technical Specifications
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
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