Absolute™ C,D filters offer HEPA-level efficiencies for final filtration in the most critical of applications, such as pharmaceutical, medical and research facilities. They work in existing systems that require high airflow and low pressure drop.
Absolute filters are usually used in make-up-air or recirculation units as a final HEPA stage to protect terminal HEPA filters in cleanrooms. They can also be used in exhaust air to help remove all harmful ultra-fine particles, whether chemical, biological or radioactive.
Absolute is available in filter classes E11 to H14 , with an MPPS of 95% to 99.995%. Absolute C is for low and medium airflows. Absolute D is for high airflows.
The media is pleated using our patented controlled media spacing (CMS™) technology for optimal airflow and best media performance. Together with intermediate hot-melt separators, this ensures uniform pleat spacing and the ability to form a rigid self-supported media pack.
The Absolute C,D gasket seal is a seamless polyurethane foam gasket that eliminates the risk of air bypass. Absolute C has a wooden frame, and Absolute D has a frame made of lightweight plastic.
Each Absolute C,D filter is individually tested and certified to EN 1822:2009 with a separate scan test protocol and serialized on the product label.