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| Measures Soluble Salts in Just 5 Seconds |
Using this quick test you can determine levels of nitrogen, phosphorus, and potassium and measure safe and danger ranges based on the same standards used by the U.S. Department of Agriculture. The results will help you to reduce over or under fertilization. Size: 3 3/4″L x 2 1/2″W x 1″H.
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