Cheap DIY Electronic PH Meter: 3 Steps
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Cheap DIY Electronic PH Meter: 3 Steps Basic Data Category: Ph meter URL (first publication): https://www.instructables.com/id/cheap-DIY-electronic-pH-meter/
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Step 1: The PH Probe
The pH probe measures pH as the activity of hydrogen cations surrounding a thin-walled glass bulb at its tip. we will be making this in two parts.
To prepare this, dissolve up some agar agar in KCl solution. Cut...
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