2,3,6-Tribromophenol, 1.2ml x 100ug/ml, toluene

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)

Tadalafil, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 171596-29-5

4'-Fluoro-2,4,6-trichlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 876009-92-6