MACHEREY-NAGEL Visocolor ECO Iron 2 Test Kit Instructions

MACHINERY-NAGEL Visocolor ECO Iron 2 Test Kit

INTRODUCTION

Test kit for performing colorimetric tests on iron ions in surface water and sewage

• Method:
  Combined with a triazine derivative, iron(II) ions form a violet complex. Iron(III) ions are also identified by means of a prior reduction with Fe-2.

  • Measurement range: 0.04–1.0 mg/L Fe

• Contents of test kit (*refill pack): sufficient for 100 tests

  • 17 mL Fe-1*
  • 5 g Fe-2*
  • 1 measuring spoon 70 mm*
  • 2 screw-plug measuring glasses 1 slide comparator
  • 1 color chart
  • 1 plastic syringe 5 mL
  • 1 instructions for use*

• Hazard warning:
  Information regarding safety can be found on the box’ label and in the safety data sheet. You can download the SDS from www.mn-net.com/SDS.

• Instructions for use:
  also refer to the pictogram on the back of the color chart

1. Pour a 5 mL water sample into each of the measuring glasses using the plastic syringe.
   Place a measuring glass on position A in the comparator.
   Only add the reagent to measuring glass B.

2. Add 4 drops of Fe-1, seal the glass and mix.

3. Add 1 level measuring spoonful of Fe-2, seal the glass and shake the mixture until the powder has dissolved.

4. Open the glass after 7 min and place it on position B in the comparator.

5. Slide the comparator until the colors match in the inspection hole on top. Check the measurement reading in the recess on the comparator reed. Mid-values can be estimated.

6. After use, rinse out both measuring glasses thoroughly and seal them.

7. The iron(II) ion content is ascertained by carrying out the analysis without Fe-2.

The reagents are also suitable for photometric evaluation.
This technique can be used also for analyzing sea water.

• Disposing of the samples:
  Information regarding disposal can be found in the safety data sheet. You can download the SDS from www.mn-net.com/SDS.

• Interferences:
  Copper(I) ions present in excess of 0.3 mg/L form a grey-violet complex and disrupt the iron test. Nickel ions present in excess of 0.5 mg/L lead to reduced findings. Cobalt ions and molybdate ions present in excess of 0.5 mg/L disrupt the iron test by forming a yellow complex compound. Nitrite ions present in excess of 20 mg/L disrupt the test by turning the specimen yellowish-red.

• Conversion table:

mg/L Fe
mmol/m3

• 0.04
  0.7

• 0.07
  1.3

• 0.10
  1.8

• 0.15
  2.7

• 0.20
  3.6

• 0.30
  5.4

• 0.50
  9.0

• 1.0
  18.0

Storage:
Store the test kit in a cool (< 25 °C) and dry place.

MACHEREY-NAGEL GmbH & Co. KG · Neumann-Neander-Str. 6–8 · 52355 Düren · Germany Tel.: +49 24 21 969-0 · info@mn-net.com · www.mn- net.com

References

• MACHEREY-NAGEL Webshop | MACHEREY-NAGEL

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