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Mushroom-Hut Shop: Substrate Mix

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My new pH meter?
    #5423425 -

How do you know if this pH meter is accurate?
It is giving me a reading of 6.6 in my coir/verm/crushed oyster shell casing mix.


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" This hobby teaches us patience, and this community teaches us to share."
~Shazoom

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Re: My new pH meter? [Re: shazoom]
    #5423448 -

I guess if you really want to test it then you need to get some litmus paper and compare. But why do you not trust the meter anyway? 6.6 is fairly good.


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Re: My new pH meter? [Re: shazoom]
    #5423449 -

Good question how do you test or calibrate a PH meter...

What do you have... :stoned:


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Re: My new pH meter? [Re: Snaggletooth]
    #5423454 -

I didn't get a great mark in grade 12 chemistry but I'm guessing distilled water would have a PH of 7 no? Assuming it's clean, a little contamination would probably throw the whole thing WAY off..


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Re: My new pH meter? [Re: shazoom]
    #5423541 -

I added 1tsp hydrated lime to see if I could get 7-7.2 and it barely hit 6.8.
Than i added table salt to test the meter and it went down to 6. I thaught salt would give a higher readeng not lower. Confused :crazy:


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" This hobby teaches us patience, and this community teaches us to share."
~Shazoom

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Re: My new pH meter? [Re: shazoom]
    #5423544 -

searching for calibrating ph meter on google.

i found a lot should work for you too.

i know bleach is 10ish.

Edited by rawtoxic (03/20/06 09:47 PM)

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Mushroom-Hut Shop: Substrate Mix

Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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