Consists of a charcol/order filter and an ULPA filter - rated 99.99997% efficiency on particles 0.01 micron and 0.12 microns MPPS. Each filter has been tested and certified to be free of leaks at time of shipment. Sealed unit with plug for easy disposal. Normal Use Filter Life: 32 hours except for eribium smoke - discard after 32 procedures (using one LTX nozzle for each procedure) or when vacum switch alert indicates full filter.