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How important is the color development time allotment listed in the test procedures?

April 26, 2017allotment color Development procedures Test time

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How important is the color development time allotment listed in the test procedures?

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Timing is very important in colorimetric chemistries. Some chemistries will continue to develop color after the specified analysis time. The most accurate test results will be obtained when the reading is taken in the time prescribed in the instructions. Visual or instrumental readout after an extended period can give an erroneous result.