Portable Whiteness Tester 1)can test powder,pasty,boards,paper/sheet,clump etc; 2)LCD Display; 3)MOQ:1pc; 4)Warranty:1pc. ... TDS Meter, Incubator, shaker, Hotplate, Mixer, PCR, Oven, etc. Portable Whiteness Tester Application:This instrument based on the principle of ... with 45/0 as a illumination condition.Meanwhile, except solution or liquid samples, this instrument can bewidely measured the whiteness ...