Chlorine, Total

Photometric test for Chlorine, Total (DPD 4) drinking water and pool or spas

Colour Change: Colourless to Pink
Range:: 0 - 5 mg/L Cl₂
Technical Resource:: Chlorine Test Method, Technical Information
Notes:: High levels of chlorine can cause bleaching and invalidate the result. If the colour becomes uneven or fades completely, check for bleaching by diluting the sample and repeating the test

Fill to the 10 mL line with sample.

Use this to "blank" the instrument. Place in cell holder and press Blank.

Pour out sample leaving a few drops.

Add a DPD 4 tablet to those drops. Then, crush to form a paste.

Fill to the 10 mL line with further sample and stir.

Place in the cell holder and press Measure.

Allow timer to count down 2 minutes. The concentration of Total Chlorine will then be displayed.