Qualitative Reference Petroleum Set, 3 x 1ml

ISO 9377-2MOD Extraction Solvent Stock Solution I 20ul of n-Heptane and 20mg of n-Tetracontane solved in 1000ml n-Pentane

Ethylene thiourea, 100 µg/ml, Acetonitrile, 1ml

Dodemorph, 250mg