Internal Standard Solution, 1.2ml, nonane Back Catalog number: EPA-23IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 80203 EPA Method 8020B Analytes Mix #1 Price on request 0951.9-K-IO 7-Methylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 14315-15-2 Price on request 19348 Hexachlorobenzene, 1000µg/ml in Isooctane, 1ml Price on request