ISO 19932-1:2025

Overview - ISO 19932-1:2025 (Knapsack sprayers - Safety & environmental requirements)

ISO 19932-1:2025 specifies safety and environmental requirements, and means of verification, for the design and construction of knapsack sprayers carried on the back or shoulder for use with plant protection products. The standard applies to lever-operated, compression and engine- or electric motor-driven knapsack sprayers that use hydraulic pressure atomisation and have a nominal volume of more than 6.0 L. It requires manufacturers to provide information on safe working practices, including residual risks, and is intended to be applied together with ISO 19932-2:2025.

The standard excludes knapsack sprayers manufactured before publication, combustion engine-driven air‑blast sprayers covered by ISO 28139:2019+A1:2024, and certain hazard categories (static electricity, explosion/fire from chemicals, and insufficient structural integrity). Noise is not considered a relevant hazard for lever‑operated and electric motor driven knapsack sprayers. Electromagnetic compatibility (EMC) is not covered.

Key Topics and Technical Requirements

The document is a practical, type‑C machinery safety standard and addresses significant hazards when equipment is used as intended or under reasonably foreseeable misuse (see Annex A). Major technical topics include:

• General design and construction requirements for operator‑carried sprayers
• Harness design and ergonomics for back/shoulder carriage
• Spray tank materials, filling and draining, nominal volume considerations
• Controls, hoses, filters, spray lance and nozzles - safe design and locations
• Specific requirements for:
  • Lever‑operated knapsack sprayers
  • Compression sprayers
  • Engine‑ or electric motor‑driven sprayers (including shut‑off, pressure control, hot parts, exhaust, fuel tank and electrical/ignition circuits)
• Power‑driven components, battery safety, and vibration reduction/measurement
• Information for use: instruction handbook, technical data, marking and warnings (including residual risks and safe working practices)
• Test and verification methods referenced or required for conformity

Practical Applications and Who Uses This Standard

ISO 19932-1:2025 is targeted at stakeholders involved in the manufacture, regulation, purchase and safe use of professional knapsack sprayers:

• Manufacturers and product designers - ensure compliant design and documentation
• Regulators, market surveillance and health & safety bodies - assess conformity and enforce safety requirements
• Farmers, foresters, horticultural contractors and employers - select and use compliant equipment safely
• Service and maintenance providers - follow safe repair and inspection practices
• Procurement/specification teams - write safety requirements into tenders and technical specs

Using the standard helps reduce operator exposure, minimize environmental dispersal of plant protection products, and provides a clear framework for product testing, labelling and user information.

Related Standards (selected)

• ISO 19932-2:2025 (companion document)
• ISO 28139:2019+A1:2024 (air‑blast sprayers - excluded)
• ISO 12100:2010 (risk assessment and risk reduction)
• ISO 5681:2020 (vocabulary for crop protection equipment)
• ISO 8169 / ISO 10626 (nozzle/connecting dimensions)
• ISO 13857, ISO 14120, ISO 11684 (safety signs/guards/labels)

Keywords: ISO 19932-1:2025, knapsack sprayers, safety and environmental requirements, lever-operated sprayer, compression sprayer, engine-driven sprayer, hydraulic pressure atomisation, agricultural sprayer safety.