MODERNER CNDB-4 Zahn Viscosity Cup (zahn cup) 4.3mm portable Zahn cup

use

Zahn Viscosity Cups are used to test the viscosity of Newtonian or near-Newtonian fluids. CNDB type Chai's Viscosity Cup is manufactured according to ASTM D4212-93 standard.

Model Selection

Use and maintenance

1. Clean the cup body with a suitable solvent before and after use.

2. Choose an appropriate cup number, and try to make the outflow time meet the recommended outflow time in the above table.

3. Immerse the cup body in the container for 1 to 5 minutes to make the cup reach thermal equilibrium, then pull the cup vertically out of the raw material, and the action needs to be fast and steady. When the top edge of the cup leaves the liquid surface, keep the cup body vertical when the liquid flows, and the distance between the bottom of the cup and the liquid surface of the container should not exceed 150mm. Stop timing when the first breakpoint occurs, and the number of seconds of outflow time at this time indicates a certain viscosity value. The difference between the two measured values should be less than 5% of the average value.

4. Convert the outflow time into kinematic viscosity according to the following formula: (sample temperature is 25°C±0.5°C when measuring)

    ν = k(t - c)

    In the formula: ν—kinematic viscosity, cSt

           t — outflow time, s

           k, c — corresponding constants (see table below)

Viscosity cup × 1

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.