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Standard method. Simple.
Specific, without interference
The SKA method involves self-calibration in each analysis, correcting any drift of the electrode.
Ion Selective Electrode (ISE) - ASTM 1246 - EPA 60 FR
Sample conditioning with alkaline reagent to a pH greater than 11.
Reading of the generated electrode potential
Addition of known volume of Standard.
Ammonia measurement by Single Known Addition (SKA) method
Range: 0 to 10 ppm (mg/L)
(Upper and Lower Ranges Configurable)
Resolution: 0.001 mg/L
Calibration: Automatic DKA
Reagent ISA: 1 ml / analysis
DKA Standard: 0.2 ml / analysis
Analysis Time: Less than 3 mins
INSTRAN - Online Ammonia Analyzer