Designed for use with domestic carbon monoxide (CO) detectors, the Solo C6 is a hand-held tester spray that does not require specialist equipment, such as dispensers. It is supplied with an applicator straw, which introduces CO to the detector sensor in a controlled manner. For testing domestic carbon monoxide detectors Hand-held - no need for specialist dispensing equipment Supplied complete with applicator straw Introduces CO to the detector sensor in a controlled manner Contents: approx. 4 litres Non-flammable, compressed gas Due to the nature of the contents, the aerosol feels very lightweight Please note: For testing FireAngel CO-9B and CO-9X carbon monoxide detectors, please use the FireAngel Easy Gas tester spray.