久久国内外免费视频_日本黄三级视频_一本大道在线观看无码一区_8050网午夜一级毛片

×

WSB-3A intelligent digital whiteness meter

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
Used for the determination of whiteness and optical properties of textiles, silk, paper, paint, cotton fiber, ceramic building materials and daily chemical materials.
GB/T 8424.2-2001 Standard Test Method for color fastness of Textiles - Test Method for relative whiteness
ISO 2469  JJG 512/48