Measurement of nitrate-nitrogen concentration in soil based on absorption spectroscopy Application US-10488331-B2 United States of America 26 Nov 2019
Self-filling soil processing chamber with dynamic extractant volume Application US-10168260-B2 United States of America 01 Jan 2019
Self-filling soil processing chamber with dynamic extractant volume Grant US-9739693-B2 United States of America 22 Aug 2017