Trying to buy a soil PH meter, but wtf.

D

donkeyshow

Well-Known Member
So I'm currently trying to find a soil PH meter online(amazon or ebay), but every product I research has very confusing reviews as to if it is really accurate. I am asking the community what soil testers they have used and had the best luck with. Thanks
 
notlaura

notlaura

Active Member
ph soil meters suck. You're better off getting a Hanna or something similar and just PHing the water you give them. Checking the runoff helps too. If you keep watering at 6.5 or whatever, eventually the soil will adjust. That's how it worked for me anyways. My soil used to be way too high, but I just kept giving lower PHed water and now it's perfect.
 
Xcon

Xcon

Active Member
Milwaukee ph pen $25 (google) ...works just as well as my $125 Hanna.

Do yourself a favor and get 7.01 and 4.01 for a 2 point calibration. Combo meters are good to have so you can measure the ppms of your nute solution and runoff, adding an extra layer of control against lockout.
 
W

wbd

Well-Known Member
Xcon said:
Milwaukee ph pen $25 (google) ...works just as well as my $125 Hanna.

Do yourself a favor and get 7.01 and 4.01 for a 2 point calibration. Combo meters are good to have so you can measure the ppms of your nute solution and runoff, adding an extra layer of control against lockout.
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How does that work exactly? If I calibrate to 7.01 solution, and the pen says 7.0, then I put it in the 4.01 solution and the pen says 4.2 so you adjust it and then put it back in the 7.01 solution won't it be off? Know what I'm sayin'?
 
Xcon

Xcon

Active Member
wbd said:
How does that work exactly? If I calibrate to 7.01 solution, and the pen says 7.0, then I put it in the 4.01 solution and the pen says 4.2 so you adjust it and then put it back in the 7.01 solution won't it be off? Know what I'm sayin'?
Click to expand...
LOL stop trollin
Two-Point Calibration
A two-point calibration is a more accurate calibration technique than the one-point calibration. The two-point calibration adjusts the meter at two different pH values, thus the meter has been adjusted so that its response is accurate at more than one point along the linear equation. The second calibration point is selected on the basis of the type of solution (acidic or basic) to be measured so that the linear response can be established.

When measuring acidic solutions, use a buffer that is acidic, pH < 7 (a pH = 4.00 solution is common). When measuring basic solutions, use a buffer that is slightly basic, pH > 7 (a pH = 10.00 solution is common).
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link
 
W

wbd

Well-Known Member
WTF man, that was a legit question!

Thanks for the link, I'll have to try it sometime. Ass. :)
 
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