METHOD OF DETERMINING SIZE OF DROPS Russian patent published in 2019 - IPC G01N15/02 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of studying the quality of spraying aqueous solutions and can be used in assessing the operation of agricultural sprayers. Method for determining droplet size comprises spraying a solution of a water-soluble salt onto a water-repellent surface of a collector placed in a Petri dish above a salt solution used therein for spraying, condensation recovery of drops and determination of their size by microscopy, spraying is carried out with a saturated solution of a water-soluble salt with high hygroscopicity, and the Petri dish is filled with an unsaturated solution of the same salt, followed by microscopy of drops with intermittent photographing with a digital camera with transmission of the image to a computer monitor, using a reading program establishing a stopping the condensation growth of the drops, fixing their size and calculating initial diameter of sprayed drops by formula

,

where D_i is diameter of drop at its formation; D_n is the diameter of drop observed in the microscope; C_n is concentration of sprayed solution; C_i is concentration of solution in Petri dish.

EFFECT: high accuracy of conducting observations and high efficiency of the microscopic process.

1 cl