Dr Who is right! ... Rx Green Technologies Report

xtsho

Well-Known Member
Do you understand what a ppm meter measures?
If you do, you should understand why you got those results.
Apparently they don't.

You can soak any plant matter in water and the ppm's will go up. Run some water through coffee and the ppm's go up. Much of that is caffeine. I could go out and take some radish leaves from my 100% organic garden and soak them in water and the ppm's will go up. They're using completely flawed methodology to come to their conclusion.

Instead of believing people that have actual degrees in the field of science they choose to believe what a couple stoners put in some books thirty years ago.
 

Boatguy

Well-Known Member
Apparently they don't.

You can soak any plant matter in water and the ppm's will go up. Run some water through coffee and the ppm's go up. Much of that is caffeine. I could go out and take some radish leaves from my 100% organic garden and soak them in water and the ppm's will go up. They're using completely flawed methodology to come to their conclusion.

Instead of believing people that have actual degrees in the field of science they choose to believe what a couple stoners put in some books thirty years ago.
The ppm pen definitely cant distinguish nutrients from other solubles.
You see it all the time here with people in a full on panic after checking their soil runoff.
 

Lil dicky

Member
" I'm just a dumb dumb so what do I know anyway
[/QUOTE]
I’m sorry I didn’t mean you were dumb, nobody here is dumb

You can see that the plant stores nutrients in its leaves and stems, when there are deficiencies it cannibalizes it’s own stores, resulting in yellow leaves in a nitrogen deficiency, or purpling or spots or whatever it might be

Will it store extra nutrients is the question.
 

waterproof808

Well-Known Member
what if he's using an EC meter and then converting his soaked buds back to ppms? does sugar read on an EC meter?
they are the same thing. TDS meters measure electrical conductivity and convert it to TDS. Ionized particles like salt increase conductivity of water, sugar does not..
 

rkymtnman

Well-Known Member
EC is looking at how well electricity can pass through the substances that are present in the water. TDS is looking at the dissolved solids in the water and looks at both EC generating particles as well as particles that don't conduct electricity which is where the main difference occurs
 

waterproof808

Well-Known Member
EC is looking at how well electricity can pass through the substances that are present in the water. TDS is looking at the dissolved solids in the water and looks at both EC generating particles as well as particles that don't conduct electricity which is where the main difference occurs
The two principal methods of measuring total dissolved solids are gravimetric analysis and conductivity.[4] Gravimetric methods are the most accurate and involve evaporating the liquid solvent and measuring the mass of residues left. This method is generally the best, although it is time-consuming. If inorganic salts comprise the great majority of TDS, conductivity-based methods are appropriate.
 
Top