2,4-D-butyl ester, 250mg

PIONA Mix.1 - Isoparaffins 36 Isoparaffins with varying Wt.% as listed below; units: 0.1mL, 0.5mL neat. Chiron No. Name: Wt.% Chiron No. Name: Wt.% 1231.5 2-Methylbutane

2-Chlorotoluene, 100µg/mL in MeOH, 5mL

N-Nitrosopiperazine, 100mg