Toxaphene Congeners (Parlar 26, 50 and 62), 2µg/ml in Nonane, 1,2ml Back Catalog number: ES-5353 Availability: In the manufacturer's stock Price on request - + Recommended 91161 EPA Method 525 Internals & Surrogates Price on request 57230 Zinc (Zn) Price on request MPFAC-HIF-IS Mass-Labelled PFAS Mixture, in MeOH, 1,2ml Price on request