EPA Method 507/525 Analytes Mix #3

Benzo[a]chrysene, neat, Solvent-neat, Unit 2mg, # of units-1, Cas.no. 213-46-7

Daily Quality Control Standard (with 4 Deuterated Compounds Internal Standard) 14 Analytes + 4 ISTD, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane 17m-Xylene 3 n-Octane 17

2,2',3,4,4',5,6-Heptabromodiphenyl ether, 1.2ml x 50ug/ml, nonane