This Luster Leaf product is used to test the pH and the fertility of soil. It is really easy to use and efficient. It only uses one AA battery and it only takes a minute to read the pH of soil and even less time to read the fertility. Just clean the probes and take a sample of mud to test and that's all you really need. Insert the probes up to the plastic base and wait. Then once you're done clean and store
For more information or to purchase this product -http://www.mastergardening.com/too-3256.html
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