EPA Method 508 - Performance Check Solution

Metazachlor-ESA sodium salt, 100µg/ml in AL, 1ml

3,4-Dibromophenol, 1.2ml x 100ug/ml, toluene

2,4,5,6-Tetrachloro-m-xylene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.