Trailblazer420 Posted October 26, 2018 Share Posted October 26, 2018 May I spark a debate? EC vs TDS, which one and why :) Sent from my EVA-L09 using Tapatalk Quote Link to comment Share on other sites More sharing options...
2 alemo Posted October 27, 2018 Share Posted October 27, 2018 Technically they are entirely different. Total dissolved solids is a measurement of actual dissolved solids in solution. EC is only a representation of the resistance in solution. The two are theoretically not interchangeable and entirely different. Your confusion comes in from companies converting the resistance into a possible representation of total dissolved salts or "part per million". This conversion is based on particular parameters and works more as a representation than an actual account for the solute. Try aim to use EC rather than TDS/PPM. If you know what you put into your solution, you can use a bit of simple math and work out your concentration by resistance. 3 Quote Link to comment Share on other sites More sharing options...
0 Trailblazer420 Posted October 27, 2018 Author Share Posted October 27, 2018 Aaah, that makes sense. I read that the ppm is just a calculation and may therefor not always be as accurate. For now though, I have 2 x PPM meters and 0 EC meters, soo..... Sent from my EVA-L09 using Tapatalk Quote Link to comment Share on other sites More sharing options...
0 Trailblazer420 Posted October 27, 2018 Author Share Posted October 27, 2018 I just realized I started an entire new thread here and it was supposed to be a reply :) :) :stoned Sent from my EVA-L09 using Tapatalk Quote Link to comment Share on other sites More sharing options...
0 420SA Posted October 27, 2018 Share Posted October 27, 2018 1 minute ago, Trailblazer420 said: I just realized I started an entire new thread here and it was supposed to be a reply :stoned Sent from my EVA-L09 using Tapatalk Lol it wasn't you bud. I split it into its own thread as Im sure this thread can be helpful to many others. Quote Link to comment Share on other sites More sharing options...
0 Trailblazer420 Posted October 27, 2018 Author Share Posted October 27, 2018 Hahaha, sweet man, I was so sure it was me :) :) :) :) Sent from my EVA-L09 using Tapatalk Quote Link to comment Share on other sites More sharing options...
0 alemo Posted October 27, 2018 Share Posted October 27, 2018 (edited) Then use the ppm meter because I can almost assure you it is actually an EC meter. Do the calculation back according to NaCl or KCl, 07 and 05 respectively. Edited October 27, 2018 by alemo Sp Quote Link to comment Share on other sites More sharing options...
0 Budwizer Posted February 17, 2019 Share Posted February 17, 2019 There are two ways to determine the concentration of solutes in a solution: mass spectrometry, or EC. Any pen that gives you an indication of “how much stuff is in solution” is measuring EC. No pen or instrument measures PPM. PPM is an approximation, based on the conductivity of known salt concentrations of KCl or NaCl, as alemo said. In other words, pens scaled in PPM are measuring EC, and then applying a conversion factor to give an approximate PPM. Quote Link to comment Share on other sites More sharing options...
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Trailblazer420
May I spark a debate? EC vs TDS, which one and why :)
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