EPA Method 1666Labeled Standard Back Catalog number: 82491 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4193-2K-4.5ME F-BTEX ISTD Mixture 4 Analytes, each 2000 µg/mL in methanol; units: 1x 4.5mL, 1x10mL 2017.6 Fluorobenzene [462-06-6] 2018.7 2-Fluorotoluene Price on request 50404 Sulfate (SO4-2) Price on request 682065 N,N-Diethylanilin, 100 µg/ml, Methanol, 5ml Price on request