2,4-D Choline salt, 100mg

2,4-Dibromophenol-PFB, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no.

PAH Spike Stock

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)