Macherey-nagel Visocolor Eco Nitrite Test Kit User Manual (+ PDF)

Contents hide

1 MACHEREY-NAGEL Visocolor ECO Nitrite Test kit

2 Method:

3 Measurement range:

4 Contents of test kit (*reﬁll pack):

5 Hazard warning:

6 Instructions for use:

7 Disposing of the samples

8 Interferences:

9 Conversion table

10 ABOUT COMPANY

11 Documents / Resources

11.1 References

12 Related Posts

MACHEREY-NAGEL Visocolor ECO Nitrite Test kit

Method:

Sulfanilamide is diazotized by nitrite in acidic solution. The diazonium salt is coupled with a naphthylamine to form a reddish-violet azo dye.

Measurement range:

0.02–0.5 mg/L NO2–

Contents of test kit (*reﬁll pack):

sufﬁcient for 120 tests

30 mL NO2-1*
- 5 g NO2-2*
- 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 4 drops of NO2-1, seal the glass and mix.
Add 1 level measuring spoonful of NO2-2, seal the glass and shake the mixture until the powder has dissolved.
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:

Chromium(VI) and iron(III) ions present in excess of 3 mg/L simulate nitrite values which are too high. Chlorine interferes even in minute concentrations.