MACHEREY-NAGEL 931084 VISOCOLOR ECO Phosphate Test Kit Instructions
- June 3, 2024
- MACHEREY-NAGEL
Table of Contents
MACHEREY-NAGEL 931084 VISOCOLOR ECO Phosphate Test Kit
Test kit for performing colorimetric tests on phosphate ions in surface water and sewage
Method
Ammonium molybdate forms with phosphate ions phosphomolybdic acid, which is reduced to phosphomolybdenum blue.
Measurement range:
- 0.2–5 mg/L PO4-P
*Contents of test kit (refill pack):** sufficient for 80 tests.
- 25 mL PO4-1*
- 25 mL PO4-2*
- 2 screw-plug measuring glasses
- 1 slide comparator
- 1 colour 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
- 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.
- Add 6 drops of PO4-1, seal the glass and mix.
- Add 6 drops of PO4-2, seal the glass and mix.
- Open the glass after 10 min and place it on position B in the comparator.
- 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.
- After use, rinse out both measuring glasses thoroughly and seal them.
The reagents can be used for the photometric evaluation with photometer PF-12
/ PF-12Plus.
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
Larger amounts of oxidizing reagents inhibit formation of the blue color complex and have to be destroyed. H2S interferes in concentrations above 2 mg/L, but can be expelled after acidification of the water sample. Heavy metals in excess of 10 mg/L can slightly decrease the intensity of the color (vanadium causes an increase in color). Silica interferes in excess of 10 mg/L Si.
Conversion table
| 0.2 | 0.6 | 0.5 |
|---|---|---|
| 0.3 | 0.9 | 0.7 |
| 0.5 | 1.5 | 1.1 |
| 0.7 | 2.1 | 1.6 |
| 1 | 3 | 2 |
| 2 | 6 | 5 |
| 3 | 9 | 7 |
| 5 | 15 | 12 |
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 · Fax: +49 24 21 969-199 · info@mn-net.com · www.mn-net.com