MACHEREY-NAGEL Visocolor ECO Test Nitrate Kit Instructions
- June 4, 2024
- MACHEREY-NAGEL
Table of Contents
MACHEREY-NAGEL Visocolor ECO Test Nitrate Kit Instructions
Method
Nitrate ions are reduced to nitrite ions in an acidic medium. Combined with a suitable aromatic amine, these form an orange-yellow azo dye.
Measurement range
1–120 mg/L NO3
Contents of test kit (*refill pack)
sufficient for 110 tests
30 mL NO3-1
5 g NO3-2
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
-
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 5 drops of NO3-1, seal the glass and mix.
-
Add 1 level measuring spoonful of NO3-2, seal the glass and immediately shake the mixture well for 1 min.
-
Open the glass after 5 min and place it on position B in the comparator.
-
Slide the comparator until the colours 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 (see „Conversion
table“).
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
Depending on their concentration, oxidizing substances may reduce the
measurement reading or suppress the reaction totally. Chlorine ≤ 10 mg/L does
not interfere.
Nitrite interferes (same reaction). This can be circumvented by addition of
amido sulphonic acid (REF 918 973).
The water sample should be between 18 and 30 °C. At lower temperatures the
reaction takes place at a significantly slower rate, and the results are
limited.
Conversion table
| mg/L NO3 – | mg/L NO3-N (Nitrate in nitrogen) | mmol/m3 | mg/L NO3 in sea water |
|---|---|---|---|
| 1 | 0.2 | 16 | 1 |
| 3 | 0.7 | 48 | 3 |
| 5 | 1.1 | 81 | 5 |
| 10 | 2.3 | 160 | 12 |
| 20 | 4.5 | 320 | 25 |
| 30 | 6.8 | 480 | 40 |
| 50 | 11 | 810 | 65 |
| 70 | 16 | 1130 | 95 |
| 90 | 20 | 1450 | 120 |
| 120 | 27 | 1940 | 160 |
Storage
Store the test kit in a cool (< 25 °C) and dry place.
MACHEREY-NAGEL GmbH & Co. KG · Valencienner Str. 11 · 52355 Düren ·
Germany
Tel.: +49 24 21 969-0 · info@mn-net.com · www.mn-
net.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>