ph ppm meter

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biggerbud420

biggerbud420

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i got my ph and pm meter today .my ph meter i calibrated with the solution that came with it had 4.01 and 6.86 solution one question is when i calibrated it i had to do it on both the 4.01 and 6.86 solution is it normal to have to calibrate it to both ? now my tap water is reading in the 5's for ph . now my tds meter i have some solution 382 ppm coming tomorrow but the directions for the tds says it is already calibrated for 642 can i still use the solution that 382 ppm to calibrate it tomorrow right now if i check my tap water with it it will show 014 ppm
 
Ph ppm meter
Deadstill

Deadstill

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Generally you'll follow the instructions included with the pH pen. I'm not sure on that brand, but the BlueLab brand pen I use must be calibrated with 7.0 solution first, then 4.0 or 10.0 solution. I generally calibrate mine once every 2 weeks because I use it multiple times daily.
 
Aqua Man

Aqua Man

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Deadstill said:
Generally you'll follow the instructions included with the pH pen. I'm not sure on that brand, but the BlueLab brand pen I use must be calibrated with 7.0 solution first, then 4.0 or 10.0 solution. I generally calibrate mine once every 2 weeks because I use it multiple times daily.
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+1 read and follow the instructions.
 
biggerbud420

biggerbud420

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Deadstill said:
Generally you'll follow the instructions included with the pH pen. I'm not sure on that brand, but the BlueLab brand pen I use must be calibrated with 7.0 solution first, then 4.0 or 10.0 solution. I generally calibrate mine once every 2 weeks because I use it multiple times daily.
Click to expand...
i re read the directions and it said do the 6.86 first then the 4.0 ell i did the 4.0 first so did i mess something up ?
 
biggerbud420

biggerbud420

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Beachwalker said:
I was under the impression that tap water is alkaline to minimize pipe corrosion, so I'm curious why yours is reading in the fives?
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i just checked the ph again with the meter this is a cup of water straight from the faucet it is reading 6.0 that is assuming it is calibrated correctly wouldnt i want to raise the ph to around 6.7 ?
 
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Deadstill

Deadstill

I'm from the government, and I'm here to help.
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bigdaddy420 said:
i just checked the ph again with the meter this is a cup of water straight from the faucet it is reading 6.0 that is assuming it is calibrated correctly wouldnt i want to raise the ph to around 6.7 ?
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That depends on what medium you are growing in.
 
cemchris

cemchris

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When you calibrate PH pens there is 3 solutions. 4/7/10 usually (or close to it). You use the 7 first. Then you use the 4 or the 10 depending on which range you will use. 4 if reading 7 and below (most of the time for plants) or the 10 if reading 7 and above. Yours is prob sold for plants so why it came with just the 4/7. 7 rinse then 4.
 
biggerbud420

biggerbud420

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cemchris said:
When you calibrate PH pens there is 3 solutions. 4/7/10 usually (or close to it). You use the 7 first. Then you use the 4 or the 10 depending on which range you will use. 4 if reading 7 and below (most of the time for plants) or the 10 if reading 7 and above. Yours is prob sold for plants so why it came with just the 4/7. 7 rinse then 4.
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I get that now but I did it in reverse so how bad would that mess up the readings
 
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