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Analytical Method: Nitrate in manure

Instruments and Reagents:

Cat.No. 173016  Spectroquant® VIS Spectrophotometer Prove 100 or

Cat.No. 173017  Spectroquant® UV/VIS Spectrophotometer Prove 300 or

Cat.No. 173018  Spectroquant® UV/VIS Spectrophotometer Prove 600 or

Cat.No. 109748  Spectroquant® Photometer NOVA 30 or

Cat.No. 109751  Spectroquant® Photometer NOVA 60 or

Cat.No. 173632  Spectroquant® Colorimeter Move 100

Cat.No. 114946  Rectangular cells 10 mm and/or

Cat.No. 114947  Rectangular cells 20 mm and/or

Cat.No. 114944  Rectangular cells 50 mm
Cat.No. 114542  Spectroquant® Nitrate Cell Test
Cat.No. 114563  Spectroquant® Nitrate Cell Test*
Cat.No. 114764  Spectroquant®  Nitrate Cell Test*
Cat.No. 114773  Spectroquant®  Nitrate Test
Cat.No. 109713  Spectroquant®  Nitrate Test*
Cat.No. 116754  Water for analysis
Membrane filter with 0.45 μm pore diameter
   
*not compatible with Move 100
   
Sample preparation:
In 250-ml standard volumetric flask place 25 ml of the sample, fill up to volume with water for analysis and mix well. For 15 minutes separate the mixture at 5000 turns per minute in the centrifuge, decant the supernatant solution and additionally filter it through a membrane filter.
 
Analysis:
Determine with the above mentioned test kits.
 
Calculation:
Nitrate content in mg/kg NO3 = analysis value in mg/l NO3 x 10

Materials

     
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