EPA Method 515.3 - Underivatized acids Back Catalog number: 30150 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2663.10-100-HX Toxaphene,100 µg/mL,n-hexane,1mL, Price on request L-PFPES Sodium perfluoro-1-pentanesulfonate, 1.2ml x 50ug/ml, methanol Price on request 59436 pH 4.0 Standard @ 25°C Price on request