Item number: MANA_40103

EAN: 4064343164412


Manufacturer: MACHEREY-NAGEL

starting from 57,60 €

Excluding 16% VAT. , plus shipping (Standard Light)

(including 19% VAT. 66,82 €)

There are variations of this item. Please select the variation you wish.


VISOCOLOR HE test kits are highly sensitive colorimetric test kits. In comparison with conventional VISOCOLOR kits, their sensitivity is enhanced by increasing the length of the test tube and the use of highly sensitive reagents. This technique allows a 10-fold to 100-fold increase of sensitivity. Each VISOCOLOR HE test kit is packed in a sturdy plastic box which contains the comparator block with colour comparison disk and all required reagents. The VISOCOLOR titration test kits are based on principles of volumetric analysis. On the gradated syring the results can be read off in mg/l or in a second alternative dimension.

Colorimetric Test Kits
Principle: High sensitivity colorimetry with comparator block and colour comparison disc
  • visual evaluation
  • environment-friendly, without toxic reagents
  • economically priced
  • convenient handling
  • highest accuracy due to extremely narrow gradation
  • highest sensitivity down to 0.002 mg/l due to longer
  • measuring tubes
  • reagent bottles with clear dosing instructions
  • compensation of turbidities and colours
  • refill packs available

Titration Test Kits
Principle: High sensitive volumetric analysis with gradated syringe
  • visual evaluation
  • economically priced
  • convenient handling
  • highest accuracy due to narrow gradated syringe
  • reagent bottles with clear dosing instructions
  • sharper colour change due to separated
  • dropping reagents
  • refill packs available

Colorimetric determination of iron

Triazine method: iron(II) ions react with a triazine derivative to form a violet complex. Iron(III) ions are reduced and thus also determined.

Natural waters as well as waste waters often contain some iron. It can be present as Fe(II) or Fe(III) ions if the pH value of the water is below 3 or if the water is free of oxygen. At higher pH values Fe(III) forms an insoluble oxyhydrate. Frequently the sample is in a transition state with finely dispersed iron oxides. In waste water and natural water containing humic acids iron is often present in the form of a complex salt.

The VISOCOLOR test kits only determine iron which is present in dissolved form as Fe2+ or Fe3+ ions. Iron complexes are not covered unless they are decomposed by oxidation with nitric acid and sulphuric acid.

Rapid tests: irontest refill
Trade mark rapid tests: VISOCOLOR
Shipping weight: 1,00 Kg
Product weight: 0,20 Kg
Type: high sensitive test kit (refill pack)
Range: 0.0 · 0.01 · 0.02 · 0.03 · 0.04 · 0.05 · 0.07 · 0.10 · 0.15 · 0.20 mg/l Fe
Sufficient for: 300 determinations
Shelf life: at least 24 months
Sea water suitability: no
Detectable with PF-11: no