HCK Spectratest Nitrates

Measurement of the intensity of the yellow-brown color formed by reaction of the nitrate reduced to nitrous ion with 5-hydroxy-salicylic acid.

5 – 100 ppm NO3

100

Surface, drinking and waste

• 1 bottle of 10 g of reagent A
• 1 measuring spoon of No. 3
• 2 plastic test tubes of 20 ml with stopper
• 2 test tubes of 16 mm optical glass with stopper
• 1 syringe of 5 ml
• Instructions (English)

- In the field of water purification, nitrates are often referred to as ‘nitrate nitrogen’, nitrites as ‘nitrous nitrogen’ and ammonia as ‘ammonia nitrogen’, however concentrations are generally expressed as NO3 for nitrates, NO2 for nitrites and NH3 for ammonia.
- HYDROCHECK SPECTRATEST kits (which can be purchased directly) require the use of a photometer, such as the HC6000, and allow many precise analyses to be carried out at a very low cost per analysis. HYDROCHECK MONOTEST kits are preferred for their greater convenience and safety of use.
The cost per analysis of the MONOTEST kits is higher, but the analysis is simpler, as the samples to be analysed are placed in optical glass tubes containing the pre-dosed reagents and used directly in the appropriate photometers. MONOTEST kits are especially recommended when there are only a few analyses to be performed.
As far as the photometer is concerned, it is preferable to use a spectrophotometer such as the Hydrocheck or Spectronic Genesys, as filter photometers give less reliable and accurate results and always require the construction of a calibration curve.

- replacement nitrate spectratest (Code No. 6461) containing:
- 3 bottles nitrate reagent A
- 10 20 ml tubes (Code N° 3310)
- 24 round 16 mm optical glass tubes (Code No. 7132)