ISO 19932-1:2013 specifies the safety and environmental requirements and their means of verification for the design and construction of knapsack sprayers carried on the back or shoulder of the operator for use with plant protection products. In addition, it specifies the type of information on safe working practices (including residual risks) to be provided by the manufacturer.

It is applicable to lever-operated knapsack sprayers, knapsack compression sprayers and knapsack sprayers driven by an engine or electric motor using hydraulic pressure atomisation of the spray liquid, with a nominal volume of more than 3 l, for their intended use primarily in agriculture and horticulture.

It does not apply to knapsack mistblowers according to ISO 28139.

ISO 19932-1:2013 deals with all significant hazards, hazardous situations and hazardous events relevant to knapsack sprayers when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer, excepting the hazards arising from: static electricity; explosion or fire from chemicals for spraying; and insufficient structural integrity.

ISO 19932-1:2013 is not applicable to knapsack sprayers which are manufactured before the date of its publication.