1 ppm = 1 mg per liter = mg/Liter EC Electrical Conductivity hydroponic nutrient solution Hydroponic System for Beginners TDS Total Dissolved Salts Total Dissolved Solids What is Total Dissolved Solids Share This Previous Post← Visit to beautiful green Multan-Pakistan Visit to beautiful green Multan-Pakistan Next PostSummer Soil Plants Update 2019 → Summer Soil Plants Update 2019 You May Also Like Herbs pH-EC-TDS-PPM Ranges for Herbs View Post Fruit pH-EC-TDS-PPM-CF Ranges for Fruits View Post Vegetables pH-EC-TDS-PPM-CF ranges for Vegetables View Post