Visual examination of the returned sample found that the zeroing stopcock lever located at non-detent position.No damage component found on the returned kits.The batch documents have been reviewed and the records showed that no problem was found relating to any visual defects during the manufacturing process.The review confirmed that all the operations, materials and tests were performed per manufacturing procedures.Based on the analysis and evaluation, the cause of leakage described above is likely due to the lever was not in the exact ¿off¿ position.This resulted a gap between the stopcock body and the lever.The seal between the two parts hence become not effective and caused leakage.
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