Zah Posted July 17, 2020 Share Posted July 17, 2020 Hi guys I have a poit ph pen that i purchased off Amazon last year, I want to calibrate the pen, I have purchased a ph buffer solution of 7 from hydroponics.co.za however, the ph meter comes with a 6.86 ph powder to dissolve, would the difference of 0.14 create an issue? I usually ph at 6 and im growing in coco. Thanks Sent from my SM-N970F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Zah Posted July 18, 2020 Author Share Posted July 18, 2020 BumpSent from my SM-N970F using Tapatalk Quote Link to comment Share on other sites More sharing options...
Ill_Evan Posted July 18, 2020 Share Posted July 18, 2020 Those pH pens are jutt. Invest in a decent one. Example of mid-range decent pH pen: https://gthydro.co.za/products/577-ph-meter-80.html Quote Link to comment Share on other sites More sharing options...
The_StonedTrooper Posted July 18, 2020 Share Posted July 18, 2020 A decent pH pen, and using storage solution for the bulb, so that it doesn't dry out, you wont have an issue. 1 Quote Link to comment Share on other sites More sharing options...
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