Shavranskyi , M.V. et al. 2021. MODEL OF PNEUMOMETRIC DENSITY METER FOR MEASURING THE DENSITY OF DRILLING SOLUTIONS OF OIL AND GAS WELLS. METHODS AND DEVICES OF QUALITY CONTROL. 1(46) (Jun. 2021), 15–24. DOI:https://doi.org/10.31471/1993-9981-2021-1(46)-15-24.