Formalin-Free Confirmation Test Strips For Use With Form-Zero Formalin Neutralizing Powder
Details
Azer Scientific’s formalin-free confirmation test strips for use with Form-Zero Formalin Neutralizing Powder quickly and positively confirm that 10% Neutral Buffered Formalin is completely neutralized after treatment with our Form-Zero Formalin Neutralizing Powder. For research purposes only.
Strongly or weakly acidic solutions have to be buffered with solid sodium acetate prior to testing, since the test paper does not react with sulphites in acidic media. Sulphide ions interfere since they also produce a red reaction colour of the test paper in neutral solution. This interference can be eliminated by the addition of an excess of nickel(II) ions. The NiS formed can be removed by filtration. Larger amounts of reducing agents, such as hydroxylammonium chloride or ascorbic acid, interfere, causing low sulphite results.
Features:
- Confirms that 10% Neutral Buffered Formalin is completely neutralized
- Formalin-free
- Test paper does not react with sulphites in acidic media
- For research purposes only
Specifications:
Gradation of scale: 0-10-25-50-100-250-500-1000 mg
Strongly or weakly acidic solutions have to be buffered with solid sodium acetate prior to testing, since the test paper does not react with sulphites in acidic media. Sulphide ions interfere since they also produce a red reaction colour of the test paper in neutral solution. This interference can be eliminated by the addition of an excess of nickel(II) ions. The NiS formed can be removed by filtration. Larger amounts of reducing agents, such as hydroxylammonium chloride or ascorbic acid, interfere, causing low sulphite results.
Features:
- Confirms that 10% Neutral Buffered Formalin is completely neutralized
- Formalin-free
- Test paper does not react with sulphites in acidic media
- For research purposes only
Specifications:
Gradation of scale: 0-10-25-50-100-250-500-1000 mg
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