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During which of the following conditions is the blank correction necessary?

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During which of the following conditions is the blank correction necessary?

(a) If sample concentration rises in linear response region

(b) If sample concentration falls in linear response region

(c) If sample concentration rises in non-linear response region

(d) If sample concentration falls in non-linear response region

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This key question is from Ion Analyser in division pH Meters and Ion Analysers of Analytical Instrumentation

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The correct choice is (d) If sample concentration falls in non-linear response region

Easy explanation: The blank correction is necessary if sample concentration falls in non-linear response region. This is the constant background for all measurements.

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