17?,18?(H),21ß(H),17-methyl-28-norhopane,neat,neat,ca. 5 µg,

Metrafenone, 10 µg/ml, Cyclohexane, 10ml

2-Chloro-1,3-propanediol-dipalmitate-d5, PP-2-MCPD-d5,1000 µg/mL,toluene,1mL,

cis-Nonachlor