Aqualytic CHECKIT Comparator Instruction Manual page 4

Instructions for the determination of
ozone (DPD)
CHECKIT Disc
®
Ozone (DPD)
Accuracy:
Tablets
DPD No. 4
Ozone (DPD) (DPD No. 4 -tablet)
 Fill both cells to the 10 ml mark.
 Place one cell in the left-hand compartment of the comparator
as a blank. Add a DPD No. 4 -tablet to the other cell,
close it with a lid.
 Swirl until the tablet has dissolved.
 Place this second cell in the right-hand compartment of the
comparator.
 Match the two colour fields against north day light and
read off the result as mg/l O
Measurement Range Order Code
0 - 1,0 mg/l O
3
± 5 % full scale
Order Code (per 100 pcs)
51 12 20 BT
.
3
14 62 70
1
2
3
4
5 5