Thanks a lot Grey Bear I was just trying to find out what are EC and ppm.Hey Folks,
the chart below will help you and others "speak the same language" when diagnosing solution issues.
EC, ppm, CF are all methods of determining your "Total Dissolved Solids"
EC is a universal standard and I prefer it, as it is the same regardless of country.
ppm has three different conversion standards
USA 1 ms/cm (EC 1.0 or CF 10) = 500 ppm
European 1 ms/cm (EC 1.0 or CF 10) = 640 ppm
Australian 1 ms/cm (EC 1.0 or CF 10) = 700 ppm
Hanna, Milwaukee 1 ms/cm (EC 1.0 or CF 10) = 500 ppm
Eutech 1 ms/cm (EC 1.0 or CF 10) = 640 ppm
Truncheon 1 ms/cm (EC 1.0 or CF 10) = 700 ppm
PPM – Parts Per Million. For every million parts water, the PPM tells you how many parts of non-water impurities are in the water. By impurity, I am referring to anything that isn’t pure water. Pure water does not conduct electricity. It’s the dissolved salts in the water that conduct electricity.
TDS – Total Dissolved Solids. This refers to the impurities in the water. Whatever is dissolved in the water is a dissolved solid. That impurity could be anything from Chlorine to the nutrients you are adding, to anything else the water has absorbed and carried into your reservoir.
EC – Electrical Conductivity. All nutrient ions in the water carry an electrical charge. This is how nutrient meters measure and estimate the PPM. EC is charted with a decimal point. Most EC meters will measure between 0.2 and 3.6 EC.
CF – Conductivity Factor. CF is the same as EC but without the decimal.
@mrmojo420I have a newbie question for yall. Im using foxfarm nutes and the schedule has PPM. Now do I test the water before I add the nutes and add that number to the PPM foxfarm gives me or do I just bring the TDS up to foxfarm numbers?