ISO outFlow Cups are mainly suitable for Newtonian or near-Newtonian fluids, with a kinematic viscosity range of 7-685mm²/s.
This article mainly compares and analyzes the selection parameters of several ISO models, namely TQC VF2051, Jingke QNB No. 6, and Kexin QNB-3. The differences between the three are shown in the following table parameters:
| Compare category | ISO outFlow Cup | VF2051 | QNB No. 6 | QNB-3 |
|---|---|---|---|---|
| product picture | ![]() | ![]() | ![]() | |
| brand | TQC | Jingke | Kexin | |
| place of origin | Netherlands | CHINA | CHINA | |
| Model comparison | ||||
| type | desktop | desktop | desktop | |
| Viscosity range | 600-2000cSt | other | 7-42cSt | |
| outflow aperture | 8mm | 6mm | 3mm | |
| Specification comparison | ||||
| Viscosity range (cSt) | 600-2000 | 134~685 | 7~40 | |
| Outflow time (s) | 30~100 | 100 | ||
| Orifice diameter (mm) | 8 | 6.0±0.01 | 3 | |
| material | titaniumanodized aluminum | Stainless steel | Stainless steel | |
| type | desktop | desktop | desktop | |
| fulfill the standard | ISO 2431 | GB/T6753.4-86, ISO243-1993 | ISO2432-1993, GB/T6753.4-86 | |
| Dimensions (mm) | 92×92×85 | |||
| Weight (g) | 337 | |||



