ISO 5682-1:2017

Overview

ISO 5682-1:2017 - Equipment for crop protection - Spraying equipment - Part 1: Test methods for sprayer nozzles defines laboratory test methods to assess the performance and durability of sprayer nozzles used in agricultural crop protection. The standard covers measurement procedures (except droplet characteristics), required measuring equipment and environmental conditions, and reporting of test results. It is the third edition and replaces ISO 5682-1:1996 with updated test methods and instrumentation.

Key topics and technical requirements

• Scope and exclusions: Specifies nozzle test methods but excludes droplet characteristic measurements (e.g., droplet size distribution).
• Measuring equipment: Requirements for instruments such as the horizontal patternator, flow and pressure measurement devices, distance/height gauges, timing and temperature/humidity controls.
• General test conditions: Defined test liquids (water and abrasive liquids), environmental conditions (temperature and relative humidity), and nozzle flow-rate settings.
• Performance tests:
  • Nozzle flow-rate uniformity and flow as a function of pressure.
  • Spray distribution measurement using a horizontal patternator (including nozzle orientation, height and spacing).
  • Spray angle determination.
  • Accelerated abrasion (wear) test to assess flow and distribution changes after exposure to abrasive liquid; Annex D gives a normative specification for aluminium oxide used in abrasion tests.
• Sampling and reporting: Sampling guidance, measurement procedures and a model test report (informative annexes).
• Informative guidance: Annexes provide recommended tests by nozzle type, patternator construction, multi-nozzle test setup, and reporting formats.

Practical applications

• Product development and R&D: Validate nozzle designs, optimize spray patterns and flow characteristics.
• Quality control and production testing: Verify batch-to-batch nozzle flow-rate uniformity and conformance to supplier claims.
• Certification and compliance testing: Provide objective, repeatable lab data for regulatory submissions or performance labels.
• Durability assessment: Use abrasion tests to predict wear-related changes in flow and distribution over operational life.

Who should use this standard

• Agricultural equipment manufacturers and nozzle designers
• Independent testing laboratories and certification bodies
• Research institutions studying spray application efficiency
• Procurement teams and technical specifiers in ag-chem and farm machinery sectors

Related standards

• ISO 5681 (Equipment for crop protection - Vocabulary) - terms and definitions used.
• ISO 8486-2:2007 - referenced for abrasive grain size designation used in wear tests.

Keywords: ISO 5682-1:2017, sprayer nozzles, test methods, spraying equipment, crop protection, horizontal patternator, nozzle flow rate, abrasion test, spray distribution, agricultural sprayers.