Télécharger Imprimer la page

Tintometer Lovibond MD 100 Mode D'emploi page 5

Masquer les pouces Voir aussi pour Lovibond MD 100:

Publicité

Chlorine PP / M110
Chlorine PP
0.02 - 2 mg/L Cl
DPD
Material
EN
Required material (partly optional):
Reagents
Chlorine Free DPD F10
Chlorine Free DPD F10
Chlorine Total DPD F10
Chlorine Total DPD F10
Available Standards
Title
ValidCheck Chlorine 1,5 mg/l
Sampling
1.
When preparing the sample, Chlorine 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.
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.
For individual testing of free and total Chlorine, the use of different sets of
glassware is recommended (EN ISO 7393-2, 5.3)
3.
The DPD colour development is carried out at a pH value of 6.2 to 6.5. The
reagents therefore contain a buffer for the pH adjustment. Strong alkaline or acidic
water samples must therefore be adjusted between pH 6 and pH 7 before the
analysis (use 0.5 mol/l Sulphuric acid or 1 mol/l Sodium hydroxide).
6
a)
2
Packaging Unit
Powder / 100 pc.
Powder /
1000 pc.
Powder / 100 pc.
Powder /
1000 pc.
Packaging Unit
1 pc.
EN   Method Reference Book   1.0
M110
CL2
Part Number
530100
530103
530120
530123
Part Number
48105510

Publicité

loading

Ce manuel est également adapté pour:

Lovibond md 110Lovibond md 200