 | pH, temperature, ORP, and selected ion measurements $595.00 |
|  |  | Lightweight, Ultra-slim Pocket Meters for Salt, Sodium, Potassium & Nitrate |
| |  | Handheld nitrate tester for measurements in soil, plant tissue, water and much more $350.00 |
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 | Quick and easy test for the effectiveness of Quaternary Ammonium sanitizers $7.00 |
| |  | Test for this important plant nutrient $189.00 |
| |  | Tests for essential plant nutrient. $33.00 |
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 | Easy to use kit for pH, Nitrogen, Phosphorus & Potas $16.00 |
| |  | Compact, portable meter that measures the essentials for vigorous growth $35.00 |
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