EN
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 1 tablet to those drops. Then, crush to form a paste.
Fill to the 10 mL line with further sample and stir.
Place the prepared sample in the cell holder and press Measure to obtain the concentration of Free Chlorine.
