A high-performance, superscalar-based computer system with out-of-order instruction execution for enhanced resource utilization and performance throughput. 5 molesliter of alkali metal chlorate, from about 1 to about 7 molesliter of hydrogen peroxide and at least one of a protective colloid, a radical scavenger or a phosphonic acid based complexing agent, wherein the pH of the aqueous solution is from about 1 to about 4. A control lever is adapted to be manually operated by a user to control the valve so as to connect or disconnect the liquid cartridge and the liquid supply channel.