There are three ISO4 cups produced by the Dutch manufacturer TQC, namely the model VF2222, VF2091 and VF2049. The three No. 4 ISO cups, the following is an explanation of the similarities and differences of the three No. 3 ISO cups:
1. Viscosity application range: 34-135cst
2. Filter diameter: 4mm
3. Outflow time: 30-100 seconds
1. VF2222 is a portable stainless steel Viscosity Cup
2. VF2091 is a portable aluminum alloy Viscosity Cup
3. VF2049 is a desktop aluminum alloy Viscosity Cup
The image below shows thumbnails of three different materials and types of Viscosity Cups:
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