What is nitrate measured for?

Nitrate (NO₃-) is one of the most important water quality parameters. It enters the water via fertilizers, wastewater and natural decomposition processes. The drinking water limit value is 50 mg/l NO₃- (Drinking Water Ordinance).

Elevated nitrate levels indicate agricultural pollution or inadequate wastewater treatment. In infant formula, nitrate can be reduced to dangerous nitrite, which is why monitoring is particularly important.

In industrial water treatment, in cooling circuits and in wastewater treatment, nitrate measurement is used for process control and compliance with discharge limits.

How does the test set work?

The CALDUR® Nitrate Test Set – Photometric is based on the NED method (naphthylethylenediamine). After adding two reagents to the water sample, a characteristic coloration develops within 6 minutes, the concentration of which is precisely determined with the WINLAB Data Line photometer.

Advantages of the CALDUR® test set

• Wide measuring range 0.5 – 50 mg/l NO₃-

  Covers the entire practical range including drinking water limit value

• 200 provisions per set

  Cost-efficient for continuous use

• High precision due to photometric evaluation

  Objective, reproducible measurement results with the WINLAB Data Line

• Proven NED method

  Reliable and selective detection method

Der Beitrag Caldur® Nitrate – Photometric erschien zuerst auf RLS Wacon analytics.

What is nitrate measured for?

Nitrate (NO₃-) is one of the most important parameters in drinking water analysis. It enters the groundwater primarily through agricultural fertilization and wastewater discharges. The limit value for drinking water is 50 mg/l NO₃- (Drinking Water Ordinance).

Elevated nitrate concentrations are harmful to health, as nitrate can be converted to nitrite in the body, which impairs the oxygen supply. A low nitrate level is particularly important for infants and small children.

In environmental analysis, nitrate is an Reagent for the pollution of water bodies by nutrients and can contribute to eutrophication.

How does the test set work?

The CALDUR® Nitrate Test Set – Colorimetric is based on the NED method (N-(1-naphthyl)-ethylenediamine). After adding two reagents to the water sample, a characteristic pink to violet coloration develops within 6 minutes, the intensity of which is proportional to the nitrate concentration.

The measured value is determined by direct color comparison with a supplied color chart.

Advantages of the CALDUR® test set

• Practical measuring range 1 – 50 mg/l NO₃-

  Covers the entire drinking water range up to the limit value

• 200 provisions per set

  Particularly economical for regular checks

• Quick analysis in just 6 minutes

  Results directly on site

• Proven NED method

  Reliable and reproducible results

• Robust plastic housing with hinged lid

  Safe transportation and protection of reagents

Der Beitrag Caldur® Nitrate – Colorimetric erschien zuerst auf RLS Wacon analytics.