Hello! I'm looking for an easy way to measure nutrient availability, particularly calcium and sodium, in soils and leaves in the field. I've considered just sending my samples out, but the cost adds up quickly. I would like a hand held meter that can tell me the concentration of calcium or sodium in a sample of leaf or soil.
I've been looking at LAQUA Twin Meters, as they have individual meters for sodium and calcium, but I'm not positive how reliable they are after reading reviews from Amazon. Has anyone used these meters previously? Or is there another meter that can measure calcium and sodium levels separately that you've used before and may be better than the LAQUA Twin? Thank you! Cari Ritzenthaler Graduate Student Bowling Green State University Dept. of Biological Sciences https://ritzenresearch.wordpress.com/ ​https://crowd.instrumentl.com/campaigns/lava-nutrients-bugs-life-hawaii/
