EPA Method 551.1 Standard Back Catalog number: 94519 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 58019 Potassium (K) Price on request 5:2SFTOH 1-Perfluoropentyl ethanol (5:2 secondary), 1.2ml x 50ug/ml, methanol Price on request 38009 WS Chorinated DBP’s - EPA Method 551 Price on request