EPA Method 525.2 - 526 Internal Standard Back Catalog number: 91297 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended FHXSA-I Perfluoro-1-hexanesulfonamide, 1.2ml x 50ug/ml, isopropanol Price on request 70486 trans-1,4-Dichloro-2-butene Price on request 10203.8-K-ME Methyl 4-hydroxybenzoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 99-76-3 Price on request