Multi-Element Internal Standard

Tetracontane, 100 µg/ml, Hexane, 10ml

6-Methyl-2',3,4,4'-tetrachlorodiphenylmethane, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no.

2-Isopropyl-3-methoxypyrazine