Trimethoprim, certified, 0.25g

Isooctane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 540-84-1

2,4',5-Trichlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 16606-02-3

1,4-Naphthoquinone-d6, 10mg