Analytical Method: Analytical Quality Assurance, Standard for Free Chlorine (dichloroisocyanuric acid)

Preparation of a standard solution for free chlorine

Reagents:
Cat.No. 110888  Dichloroisocyanuric acid sodium salt for analysis
Cat.No. 116754  Water for analysis
 
Preparation of a standard solution:
Dissolve 1.850 g of dichloroisocyanuric acid sodium salt with water for analysis in a calibrated or conformity-checked 1000-ml volumetric flask and make up to the mark with water for analysis. The stock solution prepared according to this procedure has a concentration of 1000 mg/l free chlorine.
 
Further investigational concentrations may be prepared from this stock solution by diluting accordingly.
 
Stability:
When stored in a cool place (refrigerator), the stock solution and the diluted investigational solutions remain stable for one day.

For use with test kits:

 

Measuring range
in mg/l Cl2

117925

MQuantTM Chlorine Test (free chlorine)

4 - 120

117924

MQuantTM Chlorine Test (free chlorine)

25 - 500

114434

MColortestTM Chlorine Test (free chlorine)

0.01 - 0.3

111174

MColortestTM Chlorine and pH Test (free + total chlorine)

0.1 - 1.5

111113

MColortestTM Chlorine Test Reagent Cl2-1

 

111114

MColortestTM Chlorine Test Reagent Cl2-1

 

111160

MColortestTM Chlorine and pH Test (free chlorine)

0.1 - 1.5

 

For use with test kits:

 

Measuring range
in mg/l

114670

MColortestTM Chlorine Test (free chlorine)

0.1 - 2

114978

MColortestTM Chlorine Test (free chlorine, liquid)

0.1 - 2

114979

MColortestTM Chlorine Test (free chlorine, liquid)
refill pack for 114978 

 

114801

MColortestTM Chlorine Test (free + total chlorine, liquid)

0.1 - 2

114803

MColortestTM Chlorine Test (free + total chlorine, liquid)
refill pack for 114801

 

114976

MColortestTM Chlorine Test (free chlorine)

0.25 - 15

114977

MColortestTM Chlorine Test (free chlorine)
refill pack for 114976

 

114826

MColortestTM Chlorine Test (free + total chlorine)

0.25 - 15

118326

MColortestTM Chlorine Test (free + total chlorine)
refill pack for 114826

 

117940

Reflectoquant® Chlorine Test (free + total chlorine)

0.05 - 2.0

116896

Reflectoquant® Chlorine Test (free + total chlorine)

0.5 - 10.0

100595

Spectroquant® Chlorine Cell Test (free chlorine)

0.03 - 6.00

100598

Spectroquant® Chlorine Test (free chlorine)

0.010 - 6.00

100086

Spectroquant® Chlorine Reagents Cl2-1

0.010 - 6.00

100087

Spectroquant® Chlorine Reagents Cl2-2

0.010 - 6.00

119254

Spectroquant® Chlorine Powder Packs for non-Merck photometers for 10-ml-samples (free chlorine)

0 - 2.00

119256

Spectroquant® Chlorine Powder Packs for non-Merck photometers for 25-ml-samples (free chlorine)

0 - 10.00

100597

Spectroquant® Chlorine Cell Test (free + total chlorine)

0.03 - 6.00

100599

Spectroquant® Chlorine Test (free + total chlorine)

0.010 - 6.00

 

Materials

     
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