Selenium (Se) Back Catalog number: 50478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EPA-8327STK EPA Method 8327 Native PFAS Solution, 2µg/ml in MeOH, 1,2ml Price on request 674055 Propamocarb hydrochloride, 100 µg/ml, Methanol, Price on request 11697.12-100-IO 2,3,4,6-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request