Overview
EN ISO 19932-2:2025 / ISO 19932-2:2025 - "Equipment for crop protection - Knapsack sprayers - Part 2: Test methods" specifies standardized test methods to verify requirements of ISO 19932-1:2025 for knapsack sprayers carried on the back or shoulder and intended for use with plant protection products. It applies to lever-operated, compression and engine/electric motor-driven knapsack sprayers using hydraulic pressure atomization with a nominal volume > 6.0 L. It is not applicable to combustion engine-driven air‑blast sprayers covered by ISO 28139:2019+2019A1:2024.
Key topics and technical requirements
The standard defines practical, repeatable test procedures and reporting requirements, including:
- General test conditions and test liquids/equipment needed for reproducible results.
- Functional tests: reliability of spray liquid shut-off devices, spray output measurement, filling and emptying performance.
- Structural and user-safety checks: load-carrying straps and fixation tests, harness absorbency, and stability.
- Containment and emissions tests: leakage tests, pressure tests and measurement of external surface deposit and total residual liquid.
- Performance-specific tests: drop tests, centre of gravity determination, filling rate and contents gauge accuracy.
- Specific procedures by sprayer type: separate methods for lever-operated, compression and engine/motor-driven units.
- Documentation: prescribed test report content and informative annexes (examples of preconditioning, test devices and report templates).
Applications and who uses this standard
EN ISO 19932-2:2025 is used to:
- Verify design and safety claims during product development and type approval.
- Support conformity assessment and certification against ISO 19932-1:2025 and relevant EU machinery regulations (references in Annex ZA).
- Provide standard test protocols for independent test laboratories and manufacturers’ quality control.
- Guide procurement professionals, safety officers and agricultural equipment inspectors in evaluating knapsack sprayer performance and operator exposure risk.
Typical users: manufacturers, test laboratories, conformity assessment bodies, regulatory authorities, agricultural equipment specifiers and health & safety engineers.
Related standards and regulatory context
- ISO 19932-1:2025 - requirements for knapsack sprayers (to be used in conjunction).
- ISO 28139:2019+2019A1:2024 - covers combustion engine-driven air‑blast sprayers (excluded here).
- Relationship to EU Directive 2006/42/EC (Machinery Directive) is noted in Annex ZA - compliance with EN ISO 19932-2 can support conformity with essential safety requirements.
Keywords: knapsack sprayers, test methods, EN ISO 19932-2:2025, ISO 19932-2:2025, equipment for crop protection, hydraulic pressure atomization, leakage test, residual liquid, agricultural sprayers.