GB/T 4104-2017 "Method for Determination of Whiteness of Zinc Oxide by Direct Process" specifies the method for testing the whiteness of zinc oxide produced by the direct process. This method uses a whiteness meter calibrated with a standard white board to measure the whiteness value of zinc oxide powder samples under specified geometric optical conditions, in order to evaluate their appearance and color.
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 | H21 | ICS | 71.060.20 |
| Release Date | 2017-10-14 00:00:00 | Implementation Date | 2018-05-01 00:00:00 |
