Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Analytical Method: Analytical Quality Assurance, Standard for Sulfite

Reagents:
Cat.No. 106657  Sodium sulfite for analysis
Cat.No. 108418  Titriplex® III for analysis
Cat.No. 116754  Water for analysis
 
Preparation of a standard solution:
Dissolve 1.57 g of sodium sulfite and 0.4 g of Titriplex® III with distilled water in a calibrated or conformity-checked 1000-ml volumetric flask and make up to the mark with distilled water. The stock solution prepared according to this procedure has a concentration of 1000 mg/l sulfite.
 
Further investigational concentrations may be prepared from this stock solution by diluting accordingly.
 
Stability:
When stored in a cool place (refrigerator), the stock solution remains stable for only one day.
 

For use with test kits:

 

Measuring range
in mg/l

110013

MQuantTM Sulfite Test

10 - 400 SO3

111148

MColortestTM Sulfite Test

0.03 - 32.0 SO3

116987

Reflectoquant® Sulfite Test

10 - 200 SO3

114394

Spectroquant® Sulfite Cell Test

1.0 - 20.0 SO3
0.05 - 3.00 SO3

101746

Spectroquant® Sulfite Test

1.0 - 60.0 SO3


 

 

 

 

 

 

 

 

 

 

 

 

Materials

     
Related Links