Total Residual Free Chlorine (Cl)

4-n-Octylphenol-d17, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Fenthion-oxon-sulfone, 10µg/mL in Acetonitrile, 1ml

Menthol, certified, 0.25g