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MA-78 Soil Acidity/Moisture Meter measures soil pH in the 3.5-8.0 range with ±0.2 accuracy, and moisture (0-100% relative saturation) in three minutes or less. The cone-shaped end of the meter is inserted into the soil to make good soil contact. Readings shown on the top dial are based on measured electrical potential between two dissimilar metal electrode plates. The meter is durable and insensitive to normal temperatures, and no batteries, electrodes or buffer solutions are needed. It is equipped with a belt-loop carrying case, two 3x4in (76x102mm) conditioning film sheets, and instructions. MAA-116 Conditioning Film sheets clean and condition electrode plates prior to each use of the meter and each sheet can be used up to 20 times; replacement sheets are available separately in a package of 12.
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