Camlab Lovibond MD 610, Инструкция по эксплуатации

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MD 610_2d 11/2019
Notes:
1. Strong alkaline or acidic water samplesmust be adjusted to approx. pH 7 before analysis
(use 1 mol/l Hydrochloric acid resp. 1 mol/l Sodium hydroxide).
2. If chlorine is known to be present, add one drop of 0.1 mol/l Sodium thiosulfate for each
0.3 mg/l Cl
2
in a one litre water sample.
3. Iron interferes with the test. The interferences will be eliminated as follows:
Determine the amount of total iron present in the water sample. Add an iron standard
solution with the same concentration to the vial (point 1) instead of deionised water to
produce the blank.
4. Conversion:
mg/l NH
4
= mg/l N x 1.29
mg/l NH
3
= mg/l N x 1.22
5. N
NH
4
NH
3
Reagent Form of reagent/Quantity Order-No.
Set
VARIO Ammonia Salicylate F5
VARIO Ammonia Cyanurate F5
VARIO Am Diluent Reagent HR
VARIO deionised water
Set
Powder Pack / 50
Powder Pack / 50
Reaction tube / 50
100 ml
535650