EN
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 the tube in the cell holder and press Measure to obtain the Ozone concentration.
