EPA 1620 Standard 2 Back Catalog number: 53140 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C11310200 Chlorhexidine dihydrochloride, certified, 0.25g Price on request 70911 1,2-Dinitrobenzene, 1000µg/ml in MeOH, 1ml Price on request 680295 Mirex, 100 µg/ml, Cyclohexane, 1ml Price on request