Fluorescent Brightener Agent OB-2 [4,4''-Bis(5-methyl-2-benzoxazolyl)stilbene], 97%, 5g Back Catalog number: Q147 Availability: In the manufacturer's stock Price on request - + Recommended 50093 Hexavalent Chromium (Cr +6) Price on request 681287 D5-Pyraflufen-ethyl, 100 µg/ml, Acetonitrile, 1m Price on request 50590 Copper (Cu) - 1 PPM Price on request