The Opticap XL and XLT are disposable capsule filters with Millipore Express® SHF. These are sterile capsules that adheres to the USP and AAMI standards for sterility utilizing a validated sterilization cycle. They have a sterilizing-grade PES membrane which provides a quick, efficient, and inexpensive buffer filtration. These filters saves time and cost from assembling, cleaning, and validating stainless steel enclosures.