Sulphite Test Paper


Sulphite

Product Name Type Gradation of scale
or limit of sensitivity
Item # Order
Potassium Iodate starch paper Yes/No test paper 5 mg/L SO2 90753
roll of 5 meter length $14.45  
QUANTOFIX® Sulphite Semi-quantitative 0 10 25 50 100 250 500 1000
mg/L SO32-
91306
box of 100 strips $35.70  
VISOCOLOR® ECO Sulphite titration test kit 1 drop = 1 mg/L SO32- 931095
1 kit (~60 tests) $55.80  
Sulphite test paper Yes/No test paper 10 mg/L Na2SO3 90763
box of 100 strips $41.65  

Note: mg/L is equivalent to ppm

#90753 Potassium Iodate starch paper

roll of 5 meter length $14.45  

The test paper allows the rapid detection of sulphit and sulphur dioxide. The paper is used in food analyzing laboratories. The reaction is as follows:
2 IO3-+ 5 SO32- + 2 H+→ 5 SO42- + I2 + H2O
Sulphurous acid or sulphites reduce potassium iodate to free iodine. With starch, iodine gives a characteristic blue-black color. For a detection of sulphite with high sensitivity we recommend Sulfit Test paper (REF 90763).

Color reaction: white → blue-black Limit of sensitivity: 5 mg/L SO2

#91306 QUANTOFIX® Sulphite

box of 100 strips $35.70  

This test strip is for the rapid and reliable determination of Sulfite in solutions. The easy dip-and-read-procedure provides a reliable result within 20 seconds.
In process and boiler water, sulfite is used as an oxygen scavenger. To avoid over treatment, the concentration needs to be controlled, regularly. These tests are also used to control the Sulfite concentration in foodstuff treated with sulfur compounds (SO2, HSO3-, SO32-) for longer shelf-life. In the process of wine making the control of sulfite is important to control production and quality of the wine.

Instruction Sheet (pdf)
Color reaction: white → salmon

#931095 VISOCOLOR® ECO Sulphite

1 kit (~60 tests) $55.80  

Titrimetric determination with addition of iodine solution and reverse titration of unused iodine with sodium thiosulphate.
Oxidizing and reducing substances interfere.

Instruction Sheet (pdf)
Sea water suitability: yes Detectible with PF-12: no
Shelf life: at least 1 year

#90763 Sulphite test paper

box of 100 strips $41.65  

The test paper allows the quick and easy detection of sulphite and sulfur dioxide. In food analyzing laboratories it is used to detect sulphite in meat products. In medical diagnostic it is used as a quick test on sulphite oxidase deficiency.
Instruction Sheet (pdf)
Color reaction: white → pink to brick red