成年人免费在线看网站,avwww,欧美三级一区二区,2020久久,天堂av免费,日日噜噜夜夜爽,色爱av综合

Welcome toChangzhou Tianrong Testing Technology Co., Ltd! Home |  Contact
whiteness tester
whiteness tester
Detailed instructions:

Summarize

This instrument is suitable for testing the whiteness of whit color, near white object or powder surface. It can measure the whiteness value consistent with the visibility accurately. As for the object processed by flourescent brightener, the instrument can quantitatively reflect the value of whiteness whitened by flourescent brightener. Besides, the instrument can also accurately measure the opaqueness of paper. The instrument can be used for making whiteness measurement on textile, printing and dyeing product, paint, coating, paper, plastic product, white cement, starch and other things. 

standards :JJG 512- 2002, GB2913,GB5950,GB8940. 1, GB12097,GB13025. 2。

Technical parameterimage