GB/T 21882-2008 "Liquid Dyes - Determination of Viscosity" specifies the methods for determining the viscosity of liquid dyes, including the rotational viscometer method and the outflow cup method, which are applicable to various liquid dye products. The rotational viscometer method determines viscosity by measuring the rotational resistance of a rotor in the dye, while the outflow cup method evaluates viscosity based on the time it takes for the dye to flow through a standard cup. The testing requires instruments such as a rotational viscometer, an outflow cup viscometer, and a constant-temperature water bath device, providing data for the control of production processes and application performance of liquid dyes.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G55 | ICS | 87.060.10;71.100.01 |
| Release Date | 2008-05-15 00:00:00 | Implementation Date | 2008-11-01 00:00:00 |
