Dear friends,
what is the acceptance criteria for duplicate analysis results, Standard methods for the examination for water and wastewater guideline for solids analysis is (TSS, TDS, TS)
Typically, the relative percent difference (RPD) of
duplicates should not exceed 10%, but RPDs may vary considerably
due to sample matrix and concentration.
for other test methods (colorimetry, titrimetry ) what is the acceptance criteria for duplicate values?
Well,
Segregate the water samples, then 10% from each type. applied to all variables that analyzed.
Sincerely
Try using the CUSUM Chart method as a tool to continuously monitor the concentration of substances in water and wastewater to screen out repetitive, regularly collected data.
Dear Saman,
Precision of replicates is believed to be acceptable if there is
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