Do-It-Yourself Soil Test Kit, Box of 40 Tests

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Do-it-yourself soil test kit takes forty readings.

Contains 40 tests (ten each) for nitrogen, phosphorous, potash, and pH. Comes with complete instructions and recommendations for testing and changing soil pH nitrogen, phosphorus, and potassium. Easy-to-use one tablet reagents, ideal pH ranges and NPK levels for over 100 plants and detailed, diagrammed instructions.

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Specs

Each test has it's own plastic "test tube" and color-coded capsules for mixing. Uses a color code for test results, so the readings will not be to-the-digit accurate, but should give a good idea as to what the soil conditions are. Will do soil readings for a variety of flowers, fruits, trees, shrubs, houseplants, herbs and turf. pH test only takes a few minutes, but other three tests may take up to 24 hours depending on soil.