The Iwata cup is based on the Japanese method of liquid viscosity measurement. It has a tapered orifice with the internal diameter of 50mm to the external diameter 86mm. However, the procedure of usage is the same as that of the Zahn Cups.
Main Technical Parameters
■ Internal Vertical Height: 43±0.1mm
■ Internal Orifice: Φ3.5±0.05mm
■ External Orifice: Φ6.0±0.5mm
■ Internal Diameter: 50±0.05mm
■ Outer Diameter: 86±0.1mm
■ Operating Temperature: 10±0.1mm
■ Centistokes Range: 70 to 370
■ Efflux Time(sec)±0.2s: 20-105s
■ Ordering Information: BGD 122---NK-2 Iwata cup
