MACHEREY-NAGEL 931233 VISO ECO Silica Test Kit Instructions

MACHEREY-NAGEL 931233 VISO ECO Silica Test Kit

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

Method:
Ammonium molybdate forms with silicates silicomolybdic acid, which is reduced to β-silicomolybdenum blue.

Measurement range:

0.2–3.0 mg/L SiO2

*Contents of test kit (refill pack):
** sufficient for 80 tests

• 25 mL SiO2-1*
• 25 mL SiO2-2*
• 25 mL SiO2-3*
• 2 screw-plug measuring glasses
• 1 slide comparator
• 1 color chart
• 1 plastic syringe 5 mL
• 1 instruction 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 5 drops of SiO2-1, seal the glass and mix. Wait 3 min.

3. Add 5 drops of SiO2-2, seal the glass and mix. Wait 1 min.

4. Add 5 drops of SiO2-3, seal the glass and mix.

5. Open the glass after 15 min and place it on position B in the comparator.

6. 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.

7. After use, rinse out both measuring glasses thoroughly and seal them.
   The reagents are also suitable for photometric evaluation.
   The method can be applied also for the analysis of 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:
The following ions will not interfere: ≤ 150 mg/L PO4

Conversion table:

mg/L SiO2        mg/L Si

• 0.2                      0.1
• 0.4                     0.2
• 0.6                     0.3
• 1.0                     0.5
• 1.5                     0.7
• 2.0                     0.9
• 2.5                     1.2
• 3.0                     1.4

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
• MACHEREY-NAGEL Webshop | MACHEREY-NAGEL

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