Lauric acid diethanolamide, 1g

2-(2,4-Dihydroxybenzoyl)benzoic acid, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2513-33-9

Parathion-methyl, 100 µg/ml, Toluene, 1ml

Silicon (Si), 1000µg/ml in 2%-HNO3/Water, 100ml