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.
Analysis:
Determine with the above mentioned test kits.
Calculation:
Ammonium content in mg/l NH4 = analysis value in mg/l NH4
Materials
