AUSTRALIAN STANDARDS COMPLIANT Carbon Dioxide cylinders. Own your cylinder outright and avoid the ongoing rental costs. This Bottle can hold a maximum 3.3 kg of CO2 Gas and is ideally suited to the Mosquito Slayer PRO and Series 4 (Gas) and existing Master Units** **We recommend that users of early versions of the CO2 Traps (I.e "Master" traps) use this bottle after replacement of the Main Gas Hose on their Traps to allow for a reduction of Gas Flow. (Please contact Head office for details).