4-Ethylcatechol, 100 µg/ml, Methanol, 10ml

Permethrin (mixed isomers)

Custom mix of C18-C22 alkyl PAHs, 23 components each 2µg/mL in Toluene (Sigma quality 155004, ACS Spectrophotometric grade)): Prepared gravimetrically by weighing components and solvent to a calculated 0,10mg/mL. This product has been diluted gravim

1,2-Dimethyl-3-ethylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 933-98-2