Total Residual Free Chlorine (Cl)

Terbacil, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 5902-51-2

Mercury (Hg II)

Vinyl chloride, certified ref. material, 2000μg/mL in MeOH, 1ml