QS B220 Verification Pen Kit, A (NEG) & B (POS)

QS B220 Sieve Canisters contain approximately 10% more Molecular Sieve compared to the OEM product which extends the functional life in the instrument proportionally.

DHS/TSA Approved.

Each IS0023 part includes 4 Sieve Canisters and 1 blue 5 MICRON Filter.

SHIPPING BY GROUND ONLY IN USA included