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NUTRIENT METERS (TRI-METERS)
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$299.99
The 24-7 Nutrient Tri-Meter is a great all around meter for nutrient applications needing constant monitoring. It measures PPM, pH and... read more
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$49.99
COM-80 EC/TDS/TEMP HydroTester
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$39.99
TDS-4TM Pocket-size TDS & Temp great leather case