User Manual Q&AAnswer
Feb 22, 2025 - 03:02 AM
To perform a colorimetric test using the MACHEREY-NAGEL visocolor ECO Nitrate Test Kit, follow these steps:
1. Pour a 5 mL water sample into each of the measuring glasses using the plastic syringe. Place one measuring glass on position A in the comparator.
2. Add 5 drops of NO3-1 reagent to the measuring glass on position B. Seal the glass and mix the contents.
3. Add 1 level measuring spoonful of NO3-2 reagent to the measuring glass on position B. Seal the glass and immediately shake the mixture well for 1 minute.
4. Open the glass after 5 minutes and place it on position B in the comparator.
5. Slide the comparator until the colors in the inspection hole on top match. 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.
Note: The reagents can also be used for photometric evaluation with the photo-meter PF-12/PF-12Plus. This technique can also be used for analyzing seawater (refer to the "Conversion table" in the manual).
For more detailed instructions and safety information, please refer to the instruction manual provided with the MACHEREY-NAGEL visocolor ECO Nitrate Test Kit.
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