1/4″ connection with certificate Designed to provide absolute final filtration after laboratory water purification products or standard service deionization systems The PES membrane provides for a filter that can provide water with pyrogen levels below current detection levels. Microporous membrane is made from hydrophilic polythersulfone, providing a bacteria retentive filter based on Pseudomonous diminuta challenge (HIMA) Integrity tested and validatable, making them ideal for ­microelectronic and pharmaceutical applications. Disposable housings are fusion welded without adhesives to ensure low extractables.