Click to Expand Tap to Zoom Microdot CO Breath Analyzer Calibration by Cambridge Sensors $214.95 SKU 1000-7 Kit - $214.95 Canister - $214.95 Valve & Tube - $214.95 Variant Kit Canister Valve & Tube 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add To Cart My Supplies My Supplies 0 Description Description KIT: Includes Control Valve with Tube & CO 12 Litre Canister of CO for use with Microdot Co Breath Analyzer CANISTER: Microdot CO Calibration Can Replacement (12 Liter) VALVE & TUBE: Fits Microdot CO Breath Analyzer Calibration Gas Canister