Demeton-S-methyl, 100 µg/ml, Toluene, 1ml

2,3,4,5-Tetrachlorophenol acetate, 10.0 µg/ml, Is

Thymohydroquinone, 100mg

n-Hydrocarbon Standard (C5-C15), 2000µg/mL in MeOH, 1ml