EPA Method 608Mix #4

Mefenpyr-diethyl, 100 µg/ml, Acetonitrile, 5ml

n-Pentyl 4-hydroxybenzoate, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 6521-29-5

2,3,3',5,5'-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane