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What does the rEF stand for on the faceplate of the instrument?

April 26, 2017faceplate instrument REF stand

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What does the rEF stand for on the faceplate of the instrument?

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Reference movement. When the lower section of the instrument is removed and reattached, the instrument must have a reference movement performed, to align all of the pipette parts. To perform this task, press the Menu and Enter keys simultaneously. rEF will appear on the screen. Then press the pipetting button. The instrument will perform the reference movement. The instrument will be slightly louder, and vibrate slightly more during the reference movement than during regular pipetting operations.