2,2',4,4'-Tetrahydroxybenzophenone, 500mg

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

Sodium 1H,1H,2H,2H-perfluorohexanesulfonate (4:2), 50µg/ml in MeOH, 1,2ml

5-Chloro-2-methylaniline, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 95-79-4