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San Francisco, CA | Hi Niese, thank you for your questions. The device is calibrated against lab analysis (tissue) for nutrients and against different devices for plant health (e.h. pH-meter, Brix-meter).
Our sampling best practice ask for cleaning and removing humidity before scanning to increase accuracy. We don't have data about potential inaccuracies in case of dust or humidity.
I am adding a link to a description brochure here: https://docsend.com/view/2rpt3ibuf4mp2zrd
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Any tomato growers in the community?
