Ion: Incremental Methods - Fisher Scientific accumet XL150 accumet XL200 accumet XL250 accumet XL500 accumet XL600 Reference Manual

Ion Operation: Incremental Methods
XL25, 50 and 60 meters
25.

ION: INCREMENTAL METHODS

The incremental methods which include known addition, known subtraction, analate addition and analate
subtraction are particularly useful with samples containing complex ionic backgrounds which cannot be
matched in standards. They are also useful with occasional samples whose temperatures vary.
Standardizing The Meter For All Incremental Methods:
Prior to conducting an analysis using any of the incremental methods, it is necessary to standardize the
meter with at least two standards. This will establish a slope value for the electrode in use. The slope
value is required in the incremental method calculations which yield the ion concentration of the sample.
Make sure you have selected one of the incremental methods (known addition, known subtraction,
analate addition, or analate subtraction) in the Ion Setup screen.
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