Zahn Cup Instrument Information
An instrument used to measure the viscosity of a fluid which contains a cup with a small hole drilled in the center of the bottom of the cup and a long handled attached to both sides. The cup is dipped into the fluid and filled with it. The user then quantifies the time the passes before the liquid flows entirely out of the cup through the hole (efflux time.

Common Uses
- Testing the viscosity of fluids, most commonly paint.
Common Types
- Cup Specifications (#1-5)
Measurement Parameter
- Viscosity
Calibration Discipline
Calibration Equipment Used
- Viscosity Solution
- Stopwatch