Testifire generates its nontoxic smoke stimulus from a specially formulated, fluid supplied in a replaceable non-pressurised capsule. The number of tests from a capsule is dictated by the response time of the detectors under test and can range between 500 and 1,000 tests. Although there is much more to the comparison than material cost, typically this equates to between two and five times that produced by an aerosol.

(Image shows only one Smoke Capsule - there are six in a pack)