For your volume critical filtering needs, we now offer the OPTI-SOLV® Micro Filter. Based on the same design that has made the Mini Filter a huge success, the Micro Filter cuts the internal volume to less than 200 nL but retains the ease of use and functionality of the Mini Filter. The Micro Filter is designed to be used in today's low volume, high sensitivity chromatographic applications as a last line of defense against debris. As with all Optimize column protection products, the OPTI-SOLV® Micro Filter features a zero-dead-volume connection utilizing our patented floating stem (auto-adjusting) technology.