Tool to replace point restrictors for cleaning 392 - 394 4 pack. ABI 392 & 394 instruments should have an ocasional cleaning with NH4OH if you are not performing oligo cleavage on the instrument. During this cleaning it is possible to plug the point restrictors especially if the system has not been cleaned for a long time. The point restrictors can be replaced with this tool temporarly during cleaning. After cleaning the point restrictors must be put back.
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