ISO 16119-3:2013

Overview

ISO 16119-3:2013 - Agricultural and forestry machinery - Environmental requirements for sprayers - Part 3: Sprayers for bush and tree crops - specifies environmental performance and verification requirements for sprayers used on bush, tree and similar crops (e.g., grapes, fruit, hops). It focuses on measures to minimize the risk of environmental contamination during normal use and foreseeable misuse. This part is intended to be used together with ISO 16119-1 (General), does not cover human-mounted sprayers, and excludes safety aspects (see ISO 4254-6).

Key topics and technical requirements

The standard addresses design and performance features that reduce contamination risk. Key technical topics include:

• Spray tank design
  • Internal/external surface roughness limited (Rz ≤ 100 µm).
  • Tank nominal volume rules (tank volume ≥ nominal + 5%); nominal volumes >200 L to be multiples of 100 L.
  • Filling devices that prevent backflow and comply with ISO 9357 for filling hole diameter.
  • Strainers installed in filling openings (mesh < 2 mm) with minimum depths depending on tank size and small gaps (≤ 2 mm).
• Filling and emptying
  • Minimum filling capacities (e.g., ≥100 L/min for tanks ≥100 L).
  • Residual volume limits determined per ISO 13440: typically 4%, 3% or 2% of nominal volume depending on tank size.
  • Tank emptying devices must enable complete drainage in a horizontal position and be guarded against accidental opening.
• Contents indication and mixing
  • Durable, readable tank-level indicators with specified tolerances (±15%, ±7.5%, ±5% for different ranges).
  • Mixing/agitation to ensure concentration uniformity within ±15%, verified per ISO 5682-2.
• Hydraulics, filters and hoses
  • Hose bending radius per manufacturer; pressure ratings ≥ circuit maximum.
  • Suction filters for positive-displacement pumps and pressure-side filtration sized to nozzle requirements; accessible for cleaning and blockage detection.
• Nozzles and spray control
  • No dripping after shut-off: ≤ 2 mL per nozzle in a 5-minute window (test begins 8 s after stop).
  • Individual nozzle flow rates must meet specified deviation limits (measured per ISO 5682-1).
• Cleaning and residual handling
  • Requirements for internal cleaning, container rinsing devices, and prevention of environmental contamination during cleaning and service.

Applications and who uses it

ISO 16119-3 is used by:

• Sprayer manufacturers and designers to design environmentally responsible bush/tree sprayers and demonstrate compliance.
• Test laboratories and certification bodies for verification and type approval.
• Agricultural engineers, farm managers and procurement teams to evaluate equipment suitability and environmental performance.
• Regulatory and environmental compliance officers assessing contamination risk mitigation.

Practical benefits include reduced off-target contamination, safer tank handling and filling, predictable nozzle performance, and standardized test criteria for procurement and certification.

Related standards

• ISO 16119-1 (General requirements)
• ISO 4254-6 (Safety - sprayers)
• ISO 5682-1 / ISO 5682-2 (Sprayer test methods)
• ISO 9357 (Tank filling)
• ISO 13440 (Residual volume)
• ISO 21278, ISO 22368 (Induction hoppers, cleaning tests)

Keywords: ISO 16119-3, sprayers for bush and tree crops, environmental requirements, agricultural sprayer design, residual volume, tank filling, nozzle performance, sprayer standards.