Method 1668A/B Calibration Solution [CS2], 5ng/ml in Nonane, 0,2ml Back Catalog number: EC-4976-2 Availability: In the manufacturer's stock Price on request - + Recommended T-PFOS Potassium perfluorooctanesulfonate (Technical Grade), 1.2ml x 50ug/ml, methanol Price on request 11630.24-100-ME Valsartan,100 µg/mL,MeOH,1mL, Price on request 70352 Di-n-butyl ether Price on request