1,3-Phenylenediamine, certified, 0.1g

O,O-Diethyldithiophosphate, ammonium salt

Tadalafil, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 171596-29-5

Calibration Mixtures: Di-n-butyl sulfide in Isooctane Unit: 1x10mL screw-capped bottle Isooctane µgS/g (ppm) Wt.% S-4050-0-10IO 0 Blank 0 S-4050-1-10IO 1 0.0001 Etc. S-4050-10Kit Kit of above solutions