Multi-Element Internal Std., 10ug/ml, 4x25ml Back Catalog number: 52319 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 677913 Fluchloralin, 100 µg/ml, Ethyl acetate, 1ml Price on request 79637 Bifenazate Price on request 675726 TEPP, 100 µg/ml, Ethyl acetate, 5ml Price on request