Aroclor 1242 in Transformer Oil

Diltiazem (free base), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 42399-41-7

PCB No. 31, certified, 25mg

Methyl isobutyrate , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 547-63-7