EPA Method 8270C Pesticide Mix #25

beta-Endosulfan-d4 (1,1,5,5-d4),100 µg/mL,n-nonane,1mL,

1-[4-(2-Methylpropyl)phenyl]ethanone, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 38861-78-8

2-Bromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7025-06-1