DANSK DS/ISO 22866 PDF

This International Standard establishes principles for the measurement of droplet drift from all types of
equipment designed for applying plant protection products. Detailed specifications relate to tractor mounted,
trailed and self propelled agricultural sprayers operating in arable field crops (boom sprayers) and in bush and
tree (including vines, hops, fruit) crops (including broadcast air-assisted sprayers).
The principles defined in this International Standard are also applicable for any hand-held equipment or
aircraft but detailed protocols for such systems are not included in the specifications defined in this standard.
All measurements are made with the sprayer operating outdoors in typical field conditions or over a defined
surface including grass turf. Crop conditions include all arable (field) and horticultural crops that would be
treated with a boom sprayer. Measurements of the crop and basic meteorological conditions at the time of
spraying are made as part of the test procedure.
This International Standard specifies the making of field measurements so as to determine the quantities of
spray drift during application at defined distances from a treated area for risk assessment purposes. Standard
measurement distances are defined that are used to enable the results from different experiments to be
compared.
Measures of drift can relate to either the deposition of spray onto horizontal surfaces outside of the treatment
area or to airborne spray profiles that can be characterised at given downwind distances downwind of the
treatment area. Deposition onto horizontal surfaces is relevant to the assessment of the risk of contamination
of, for example, surface water whereas the measurement of airborne profiles are relevant to risk assessments
relating to inhalation effects and to the contamination of, for example, vegetative structures at field boundaries.
This International Standard is applicable to both situations although the emphasis in any series of trials may
be varied by selection of the sampling matrix to be used.
Where comparative assessments of the relative drift risk from different application systems are needed then
this International Standard is applicable but some requirements relating to the use of reference spraying
systems, collectors, selection and definition of the trial site may be modified. A description of such
modifications is included in this standard where appropriate.
Drift measurements relate to application conditions aimed at achieving realistic levels of deposit on a target
within the sprayed area. Since drift is commonly expressed as a proportion of the application rate, it is
important that some direct assessments of target deposits are made as part of the drift measurement
procedure.