EPA Method 525.2Mix #1

Valeraldehyde-DNPH, 100µg/ml in Acetonitrile, 1ml

2-Ethylhexyl-d17 2,3,4,5-tetrabromo[13C6]benzoate, 1.2ml x 50ug/ml, toluene

Naphthalene, 2000µg/mL in MeOH, 1ml