ISO 22401:2015 pdf download

ISO 22401:2015 pdf download.Equipment for crop protection — Method for measurement of potential spray drift from horizontal boom sprayers by the use of a test bench
1 Scope
This International Standard provides a test method to measure spray sedimentation from horizontal boom sprayers using a test bench. The sedimentation measure gives a value for potential spray drift. These measurements can be used to compare different sprayer setups on the same sprayer. This International Standard is applicable to mounted, trailed and self-propelled horizontal boom sprayers used in arable crops; and horizontal boom sprayers used for weed control in orchards/vineyards and spray application on horticultural crops. This International Standard is intended for booms using a uniform set of spray generators. If intended for spray drift classification of the sprayer, the comparison is limited to nozzle type, spray pressure and boom height. NOTE Further investigations and tests are on-going to consider other parameters for classification aims (e.g. air assisted system, forward speed, nozzle spacing and orientation).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 5681, Equipment for crop protection — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions in ISO 5681 and the following apply.
3.1 sprayer setup
combination of nozzle and boom parameters and sprayer adjustment on a given sprayer
Note 1 to entry: Examples of setting parameters to be considered are nozzle type and size, nozzle spacing,orientation, boom height, forward speed, spray pressure, and spray deposition assistance (e.g. air assistance or shielding).
3.2 potential spray drift
percentage of initial spray volume that remains suspended in the air after the sprayer passage and which represents the fraction of spray liquid susceptible to drift out of the treated area by the action of air currents during the application process
4 Principles
The method is aimed at determining the potential spray drift generated by horizontal boom sprayer setups, by collecting the spray droplets sedimenting after the boom has passed over the entire length of the test bench. The total amount of collected sediment is compared to the reference spray deposit (RSD) to obtain the drift potential value (DPV), see 7.2. To allow comparison of results between facilities/laboratories, one measurement shall be done with the sprayer setup specified in Annex A.