巨胸挤奶视频www网站|色戒电影完整版未删减|香水电影在线观看完整版免费未减删|色戒完整版电影观看,优酷色戒完整版在线观看,sesese视频,婷婷亚洲视频

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