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Submit a Return Authorization Request

Please complete the form below to generate a Return Authorization to return your instrument(s) to 3M for calibration and/or repair service. Please have the serial number(s) of your instrument(s) available, as you will be asked to provide this information. Please be sure to review the "Calibration Levels Defined" (link to document) prior to completing the form so that you are educated as to what service you would like to select. Once you have completed all necessary fields and submitted the form, you will receive a confirmation email with shipping instructions and your instrument-specific Return Authorization number.

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