Oxalic acid, 250mg

PCB Congener Mix #4

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)

Dimethenamid ESA sodium salt, 100µg/ml in MeOH,1ml