EPA Method 8151 Standard Back Catalog number: 94509 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50610 Chloride 2.0 µg/mL (Cl-) Price on request 12025.5-K-ME n-Propyl acetate,1000 µg/mL,MeOH,1mL, Price on request C15200300 Metribuzin-desamino, certified, 5mg Price on request