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This brochure goes over calibration guidelines for backpack or knapsack sprayers.
This publication, chapter 15 of the 2025 Cotton Information handbook, provides information on sprayer calibration for applying chemicals in cotton production.
This publication covers cleaning and calibrating chemical application equipment, such as dusters, spreaders and sprayers.
For calibration to be successful, several items need to be taken care of before going to the field. Calibration will not be worthwhile if the equipment is not properly prepared. Calibration should be performed using water only. Follow the steps outlined below to prepare spraying equipment for calibration.
