EPA Method 624 Standard Back Catalog number: 41121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended IPPFNA Perfluoro-7-methyloctanoic acid, 1.2ml x 50ug/ml, methanol Price on request 50286 Nitrate (NO3-) as N Price on request 9417.17-K-ME Venlafaxine hydrochloride,1000 µg base/mL,MeOH,1mL Price on request