ICP-MS Tuning Solution #1 EPA 200.8

3 Deuterated Compounds Internal Standard Mix 3 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% Benzene-d6 39.7 Naphthalene-d8 20.9 Ethylbenzene-d 10 39.3

7-Aminobenz[a]anthracene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2381-18-2

3,4-Dimethyldiphenylsulfide, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2828-65-1