| Liquid coating performance testing |
| Testing items | Description | ISO standard | ASTM standard | China GB standard | Internal methods |
|---|---|---|---|---|---|
| Flow time & Viscosity | Flow time | ISO 2431-ISO cups | ASTM D5125 ISO cups, ASTM D4212 Zahn cups, ASTM D1200 Ford cups, | GBT 6753.4-ISO cups, GBT 1723 Tu-1 & 4 cups | |
| Rotary Viscosity | ISO 2884-1 | GBT 9751.1 | |||
| Stormer visicosity | ASTM D562 | GBT 9269 | |||
| Fineness & Particle size | Fineness | ISO 1524 | ASTM D 1210 | GBT 1724 | |
| Particle size | ISO 8130-13 | GBT 21782.13 | |||
| Non-volatile content | Non-volatile content | ISO 3251， ISO 3233-volume | ASTM D 2369 | GBT 1725， GBT 9272-volume, GBT 6751， GBT6740 | |
| VOC content | VOC content | EPA method 24 | GBT 23985-weight， GBT 23986-GC | ||
| Density | Density | ISO 2811 | ASTM D1475 | GBT 6750， GBT 21862 | |
| Stability | Stability | ASTM D 2243 | GBT 6753.3， GBT 9268 |
Dried coating film performance testing
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