When calibrating bravo capsule prior to a procedure, the calibration failed on buffer solution ph 1.07.The case was delayed while a second capsule was prepared.A second capsule failed with calibration of ph 1.07.A third capsule was prepared using a different lot number, new bottle of buffer solution and a different receiver.The calibration failed again.The given representative was notified and came to endoscopy.A fourth capsule from a different lot number, new buffer solution and a different receiver was set up with the rep present.The procedure then was performed without any difficulties.No bravo capsule identifying information was documented in the event report.Event reporter has been contacted for additional information.Manufacturer response for reflux capsule, bravo reflux capsule (per site reporter): no response to date.
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