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The transmission values without bottle are too low. Must I re-calibrate the DO Analyser?

April 26, 2017analyser bottle low re-calibrate transmission values

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The transmission values without bottle are too low. Must I re-calibrate the DO Analyser?

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If the values are only a little bit below 100% the problem may be solved by cleaning the optical parts. If this is not enough a re-calibration is necessary. See the DOA Technical Reference Manual for further information.