trimeter question

rockydog

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Are ec and ppm the same thing? I am buying my meter tomorrow morning and wanna make sure I get the right one. Any suggestions
 

KADE

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They are not the same thing... but basically do the same thing and one reading can be calculated from another. EC/TDS/PPM is basically the same.
 

rockydog

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ok so you guys think this will work? May I ask what the ec is, and where it comes in while growing herb.
 

Dr.GreenThumb

*The Sinsemilla Sheik*
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TDS is the measuring of the amount of salts in a solution. For alot of applications the amount of salt is indicitive of the levels of other stuff in a solution. TDS/PPM meters sold for gardening and aquariums figure the amount of salt in Parts Per Million by measuring the Electrical Conductivity of the solution under test. So a PPM/TDS meter is a EC meter that converts the EC value into PPM values. There are alot of descriptions online about why and how to measure PPM/TDS or EC so google for them if you want alot more details.

EC is a measure of Electrical Conductivity from two probes 1cm apart. 1 EC is = 1 microsiemens, to convert from EC to siemens multiply by 1E-6. EC can be converted to PPM by multiplying by 500. PPM can be converted to EC by dividing by 500.
 

KADE

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What the doc said... basically all the same crap. (but important)
 

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