Resorcinol bis(diphenyl phosphate), 100µg/ml in Toluene, 1ml

Formaldehyde-DNPH Level 5 (5ug/mL)

17 alpha(H),21ß(H)-(22RS)-Homohopane, 50µg/mL in Isooctane, 1ml

1,2,3,4,7,8-Hexachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene