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A manually operated sprayer, which consists of a handheld lance connected to a container, typically with a volume of 10 to 20 litres for the holding of a diluted chemical. The lance may either have a single nozzle attached or may have several nozzles attached to an extended lance attachment. The container is pressurised by a hand lever operated pump, all of which is carried on an individual's back and attached to them by means of a harness.