EPA Method 525.2 Pesticide Level 1

4 Deuterated Compounds Internal Standard Mix 4 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% Benzene-d6 16.7 Naphthalene-d8 8.8 Ethylbenzene-d10 16.5 Toluene

Methylpentadecanoate (C15:0), 10mg/ml in Hexane, 1ml

Ethyl sorbate