Lovibond Tintometer MD 100 Manual De Instrucciones página 11

Chlorine dioxide PP / M122
Chlorine dioxide PP
0.04 - 3.8 mg/l ClO
DPD
Material
EN
Required material (partly optional):
Reagents
Chlorine Free DPD F10
Chlorine Free DPD F10
Glycine
f)
Glycine
f)
VARIO Glycine Reagent 10 %, 29 ml
Sampling
1. When preparing the sample, outgassing, e.g. through the pipette or shaking, must be
avoided.
2. The analysis must take place immediately after taking the sample.
Preparation
1. Cleaning of vials:
As many household cleaners (e.g. dishwasher detergent) contain reducing
substances, this can lead to lower results with the determination of Chlorine
dioxide. To avoid measurement errors, the glassware used should be free of
chlorine consumption. To achieve this, all glassware should be placed in a sodium
hypochlorite solution (0.1 g/l) for one hour and then rinsed thoroughly with deionised
water.
2. Strong alkaline or acidic water samples must be adjusted between pH 6 and pH 7
before the analysis (use 0.5 mol/l Sulphuric acid or 1 mol/l Sodium hydroxide).
12
2
EN Method Reference Book 1.0
Packaging Unit Part Number
Powder / 100 pc. 530100
Powder / 530103
1000 pc.
Tablet / 100 512170BT
Tablet / 250 512171BT
29 ml 532210
M122
CLO2