Ppm and ec charts ???

mears220

mears220

Well-Known Member
has anyone got the ppm chart that converts into ec iv seen them somewhere on here but cant find them again plus rep for the charts or a link:bigjoint:
 
f1bud

f1bud

Active Member
mears220 said:
found it :mrgreen:
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hey mears,, i am proppa broke but need some testing stuff, i.e. Ph/ ppm /ec/ now i think i understand the ppm, not so sure about the e.c. ,, had some minor probs wiv last grow and decided on my next one i need a propper ph meter instead of drops n colour chart,, but want a wand that aint 50 pounds or more !!! I seen a wand n ph pen for that price, sed it did it all but after readin ur reply there about e.c converting to ppm, so if i had a pen that told me the ppm then i cud just convert and then no need for a e.c reading ? Is this rite and if so where can i get a cheap ppm pen ? Thanx for any response man !!!!!!!!!!! Noob
 
mears220

mears220

Well-Known Member
f1bud said:
hey mears,, i am proppa broke but need some testing stuff, i.e. Ph/ ppm /ec/ now i think i understand the ppm, not so sure about the e.c. ,, had some minor probs wiv last grow and decided on my next one i need a propper ph meter instead of drops n colour chart,, but want a wand that aint 50 pounds or more !!! I seen a wand n ph pen for that price, sed it did it all but after readin ur reply there about e.c converting to ppm, so if i had a pen that told me the ppm then i cud just convert and then no need for a e.c reading ? Is this rite and if so where can i get a cheap ppm pen ? Thanx for any response man !!!!!!!!!!! Noob
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well im no expert but thats what i'm going to try and do for now intill i can get a decent ec meter they sell ppm meters pretty cheap on ebay and they will do the job intill your ready to buy a good 1 ..anyone out there with anymore advice about this:eyesmoke:
 
asaph

asaph

Well-Known Member
piece of education: when you state your tds in ppm, the person reading what you wrote CANNOT TELL what the tds of your solution is. use only EC because this is the only way tds can actually be measured. all your ppm meter does is convert is by a non-uniform factor from EC to PPM. if you got one of those that's fine, but don't expect people to guess your conversion factor just like that. they can only tell that it's between 0.5 and 0.7.
 
unohu69

unohu69

Well-Known Member
whats the difference tho? The meter is just a tool, and either way its giving a single number reading. whether you refer to tds or ec, its still just a reference number with no real data behind it right? With out sending your solution to a lab, you will never know exact particulates that it consists of. So really, we all are shooting arrows in the dark. hope everybody has knee pads....
 
cleverpiggy

cleverpiggy

Well-Known Member
unohu69 said:
Researching this subject now, think iv settled on this one :
http://www.amazon.com/COM100-Waterproof-Temperature-Combo-Meter/dp/B0045LQFTK
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Hello unohus69,
I just picked up the same meter, what setting are you using for the PPM. I am using the 442. I also am using Dyna grow line. Can you tell me your setting on your meter and your ppm for Dyna grow in veg and flower. I am currently using 5-800 for flower in a DWC situation, and 4-600 in Promix (flowering). I just want to compare things. Homebrewer gave me some advice but really didnt give me a good ppm number to use.

Thanks,
 
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