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   Jeffro jones Registered User

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   #1 Jeffro jones, Dec 1, 2011

   What's the best way to calibrate ph meter
   

    

2. 

   Tihspeed master bator

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   #2 Tihspeed, Dec 1, 2011

   with calibration solution
   
   How to Calibrate and Use a pH Meter Wiki

    

3. 

   Jeffro jones Registered User

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   #3 Jeffro jones, Dec 1, 2011

   Thanx I'm starting bubbleponics. Am interested in organic hydro

    

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