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WHAT IS ELECTRICAL CONDUCTIVITY (EC)?

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WHAT IS ELECTRICAL CONDUCTIVITY (EC)?

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EC is the measurement of a solutions ability to conduct an electrical current. For horticultural applications, the unit of measure is often expressed as millimhos. Absolutely pure water is actually a poor electrical conductor. It is the substances (or electrolytes) dissolved in the water which determine how conductive the solution will be. Therefore, EC can be an excellent indicator of: 1. Water quality 2. Soil salinity 3. Fertilizer concentration EC AND WATER QUALITY The quality of irrigation water is one of the most critical factors influencing your growing operation. It is important to have a complete water analysis performed on a regular basis. Environmental conditions such as drought, changing seasons, heavy rainfall, etc., can cause the concentrations of dissolved salts in your water to vary significantly. These dissolved salts (i.e. calcium, sodium, etc.) can directly affect your plants health and, over time, render even the best soil useless. You can monitor your overall water

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