Total Residual Free Chlorine (Cl)

3,4,5-Trimethylphenol, 100 µg/ml, Acetonitrile,

Sulfur Calibration Stock Solution Thiophene 1000 µg/mL in Toluene; unit: 5x1mL ampoules Please request for diluted samples in the range 1 to 1000 ng/mL.

Furan-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 6142-90-1