Pack Size: box of 100 strips
Hazard Class /UN Number: Not Restricted
Storage Temp: Room Temperature
Test sticks for the semi-quantitative determination of sulphite in solutions. 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.
Gradation: 0 · 10 · 25 · 50 · 100 · 250 · 500 · 1000 mg/L SO32-
Color change: white → salmon
Evaluable on reflectometer: QUANTOFIX Relax
Instrumental measuring range: 10-500 mg/L SO32-
Method: Sulfite - Nitroprussid / Zn-hexacyanoferrate
Additional reagent: No
Storage temperature: 4-30 °C / 39-86 °F
Shelf life (from production): 2.5 Year(s)
Scope of delivery: 100 test strips in a tube, instruction leaflet
Gross weight (incl. packaging): 42 g / 0.09 lbs
Packaging dimensions: 40 x 123 x 40 mm / 1.57 x 4.84 x 1.57 Inch
Hazardous material: No
Instruction Sheet
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