Effect of Water Temperatureon Electrical Conductivity Useful Conversions Measures  Useful Conversions 1 tsp 5 mL 1 tbsp 15 mL 1 oz 30 mL 1 qt 946 mL 1 L 1000 mL 1 gal (US) 3.875 L 1 gal (US) 128 oz 1 gal (AU) 4.546 L EC Conversion Chart ECmS/cm CF ppm 500TDS ppm 700(ECx700) … Continue reading Nutrient Calculator