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Amazon.com: SONKIR Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green) : Patio, Lawn & Garden
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METTLER TOLEDO SevenExcellence S400 Benchtop pH Meter:pH and Electrochemistry:pH | Fisher Scientific
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