Sieve Canister (4-pack) with Filter
O-rings can occasionally become visually contaminated, damaged or worn and will need to be replaced.
Four canisters and one exterior 5-micron filter are included. The Molecular Sieve Canisters are critical in maintaining proper performance of the QS-B220 instrument and must be replaced periodically. Manufactured in the USA, the QS-B220 Molecular Sieve Canisters have been extensively tested by the DHS Transportation Security Laboratory to ensure they meet or exceed performance standards.