(b)(4).The customer returned one autofuser of catalog number mvbxl-cpnb af w/as 550 x 1-14ml/hr cpnb for analysis, lot a190329-pscfb000us-1.Visual inspection revealed that the autoselector was set at 0ml/hr and that the balloon was filled with solution.During the visual and microscopic inspections, the tubing on the bottom of the autoselctor was inspected for damage.The reported complaint of the tubing separated was confirmed during the visual and microscopic inspections.During the inspections, it was observed there to be a bonding/glue issue between the tubing and the tube attached to the bottom of the autoselector.Based on the result of this investigation , the root cause is undetermined and the sample will be forwarded to the supplier to further investigate.
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