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CONDUCTIVITY TERMINOLOGY Both AG-5 and AG6/PH AGRI-METERS are calibrated in millimhos, the term most widely used by growers to express electrical conductivity. Some charts may read in other units called micromhos. However, since one millimho equals 1,000 micromhos, conversion is easy. Parts per million (ppm) is also sometimes used. Conductivity/ppm fertilizer concentration tables can be obtained from your supplier, consultant, or university advisor.
Martha
Reviewed in the United States on August 31, 2020
I don't know how a nursery owner/manager could live without one of these. Plant fertility is so important for getting optimum growth and excess fertilizer can damage plants and lead to off-site pollution. I love the Myron Meters because they come with a sampling cup, one less thing to think about when testing crops in the field. I've had mine for over 30 years and it still works like new
John R. Washington
Reviewed in the United States on August 7, 2016
Excellent product. An indispensable tool for anyone managing plants, and wanting to ensure safety of the fertilizer applications.
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