Zahn Cups
Zahn Cups can be used to quickly measure the viscosity of liquids such as paint, ink, varnishes, syrup, and oil. They are produced according to ASTM D 816, ASTM D 1084, and ASTM D 4212. The Stainless Steel Cups are molded precisely, and the orifices are precision drilled using high-speed CNC drilling.
Each cup has a 12-inch loop handle to allow the cup to be dipped by hand into a liquid container. At the center of this handle is a finger-ring for holding the cup in a vertical position during use. Their orifice diameters are set at the factory for appropriate results with applicable NIST traceable Newtonian oils.
To use it, first fill the volume of the Zahn Cup with the required liquid and then place an index finger over the orifice to stop any flow of the liquid. A ring at the Zahn Cup handle allows the cup to be hung perpendicularly (still with the finger stopping any liquid flow out). Prepare a Digital stopwatch and set zero. Immediately start the stopwatch when the finger is released. As soon as there is a first "break" of the flow, stop the stopwatch. The second shown is the time of the liquid flow, which is also the flow viscosity of that liquid.
Every Biuged’s Zahn cup has its own coefficient “k”, which is marked on the cup body.
Fact: Viscosity = Testing viscosity × K
Main Technical Parameters :
- Volume of Cup: 43 ml – 49 ml
- Length of Handle: 40 ± 0.1 mm
- Height of Cup: 58 ± 0.1 mm
- Measurement Temperature: 25°C ± 1°C
- Comes with Calibration Certificate
Details of Each Zahn Cup
| Details/Zahn Cup | Zahn Cup No. 1 | Zahn Cup No. 2 | Zahn Cup No. 3 | Zahn Cup No. 4 | Zahn Cup No. 5 |
|---|---|---|---|---|---|
| Orifice (mm/inches) | 1.98 / 0.08 | 2.74 / 0.11 | 3.76 / 0.15 | 4.27 / 0.17 | 5.28 / 0.21 |
| Flow Time Range (sec) | 33.5 – 80 | 20 – 80 | 20 – 75 | 20 – 80 | 20 – 80 |
| Measurement Range (cSt) | 5 – 56 | 21 – 231 | 146 – 848 | 222 – 1110 | 460 – 1840 |
| Applications | Thin-bodied materials | Clears, lacquers, enamels, press-side adjustment of flexographic inks | Manufacturing of flexographic inks | More viscous paints and inks | Silk-screen inks |
| Ordering Information | BGD 126/1 | BGD 126/2 | BGD 126/3 | BGD 126/4 | BGD 126/5 |
