4,4´-Diamino-3,3´-dimethyldiphenyl methane, certified, 0.1g Back Catalog number: C12194800 Availability: In the manufacturer's stock Price on request - + Recommended 30068 Internal standard 2, 2000g/ml in MeOH, 1ml Price on request 55023 WS Residual Free Chlorine Price on request 675749 Dichlofenthion, 10 µg/ml, Ethyl acetate, 10ml Price on request