For measuring chlorine residuals at low levels
- Conforms to APHA Methods 409C, D-1253 and EPA method 4500-Cl-D and E
- Enables low-level chlorine to be determined at discharge point
- Titrates to an electrical endpoint
- Battery or AC power
Determines free, combined or total chlorine residuals as well as residual bromine, iodine, ozone, permanganate or chlorine dioxide. An internally mounted switch is used to select normal sensitivity range of 1 to 10 ppm, or high sensitivity range of down to 5 ppb (0.005 mg/L) Cl2. The working pipet is filled from an internal one-pint collapsible bag containing 0.00564N phenylarsine oxide titrant. Current flow between electrodes is indicated on milliammeter on front panel of titrator. Uses platinum sensing electrode and copper reference electrode.
Unit includes a 1 mL buret, 5 mL buret, 250 mL beaker, cotton swabs for cleaning electrodes, one bag of 9388J21 phenylarsine oxide solution, 120 mL bottle of potassium iodide solution with 30 mL dropper bottle and 120 mL of pH 4 and pH 7 buffer solution with 30 mL dropper bottle. Power requirements: 120 VAC or internal rechargeable 6 V battery (included).
Back Titration Kit is for the determination of total residual chlorine when interfering organic compounds are present. Includes 4 oz. of 0.0282N iodine solution, 10 mL buret with stopcock for iodine solution, elongated buret tip with Teflon® seal for dispensing iodine solution and two springs for attaching tip to buret.