The OPTI-SOLV® Mini Filter provides low-impact filtration in a package no larger than a finger tight fitting. Use them to extend the life of your analytical column, or before your mass spectrometer as a last line of defense against debris. Perfect zero-dead-volume connections are obtained every time with our patented automatic tube stop depth adjustment. Unique depth-filtering elements allow for greater capacity with no band spreading or loss of performance. The efficient design requires no holder, threads directly into any 10-32 port and adjusts to fit all brands of columns or ports.