Color Back Catalog number: 50820 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 32251 1,1-Dichloroethene, 20mg/ml in MeOH, 1ml Price on request 683173 Oxamyl-oxime, 100 µg/ml, Acetonitrile, 5ml Price on request 70099 4,4’-DDD Price on request