Analytical Method: Ammonium in curative water

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. 114739  Spectroquant® Ammonium Cell Test
Cat.No. 114558  Spectroquant® Ammonium Cell Test
Cat.No. 114752  Spectroquant® Ammonium Test
Cat.No. 116754  Water for analysis
Cat.No. 108418  Titriplex® III for analysis
Cat.No. 106498  Sodium hydroxide pellets for analysis
Titriplex® III solution:
Dissolve 12 g Titriplex® III and 2.6 g sodium hydroxide in 100 ml of water for analysis.
Sample preparation:
Curative water often contents an high amount of alkaline earth metals. The analysis may be hindered by the precipitation of alkaline earth hydroxides. In such cases, after allowing a sufficient time for the color to develop, add dropwise Titriplex® III solution to dissolve the precipitation. Treat the blank reading also with the same amount of Titriplex® III. The analysis is not interfered by Ca - contents up to 1000 mg/l.
Determine with the above mentioned test kits.
Ammonium content in mg/l NH4 = analysis value in mg/l NH4



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