Formaldehyde (1 ppm)

Custom mix of C10-C16 alkyl PAHs, 25 components each 2µg/mL in Toluene (Sigma quality 155004, ACS Spectrophotometric grade): Prepared gravimetrically by weighing components and solvent to a calculated 0,2mg/mL. This product has been diluted gravimet

3,5,6-trichloro-2-pyridinol(4,5,6-13C3, 99%) cp 97%, 100ug/ml in Acetonitrile, 1,2ml

Triethylene glycol