ENGLISH
Instructions for the determination of ozone in
the presence of chlorine
CHECKIT
®
Disc
Measurement Range Order Code
Ozone (DPD)
0 - 1,0 mg/l O
3
14 62 70
Accuracy:
± 5 % full scale
Tablets
Order Code (per 100 pcs)
DPD No. 4
51 12 20 BT
DPD Glycine
51 21 70
Ozone in the presence of chlorine (DPD No. 4 /
DPD Glycine-tablet)
Fill both cells to the 10 ml mark.
Add a DPD Glycine-tablet to one of the cells.
Crush the tablet.
Afterwards add a DPD No. 4 -tablet to each cell.
Crush the tablets, close the cells with a lid. Swirl until
the tablets have dissolved.
Place the cell with the DPD Glycine tablet
and
the
DPD No. 4 -tablet in the left-hand compartment of the
comparator. Place the cell which contains
only
the
DPD No.4 -tablet in the right compartement of the
comperator.
Match the two colour fields against north day light and read
off the result as mg/l O
3
.
1
4
55
2
3
