EPA Method 502.2 Surrogate Standard Back Catalog number: 91704 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53122 ICP-MS Tuning Solution #1 EPA 200.8 Price on request 3780.9-K-IO 2-Isobutyl-3-methoxypyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. 24683-00-9 Price on request 59222 Total Organic Carbon (C) Price on request