BioBoard/Documentation/pH

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Contents

Introduction to pH

A pH measurement of a medium is a measure of how acid or how basic it is. Lemon juice for example is acidic, whereas bleach or sodium bicarbonate are basic (the opposite of acidic). pH can be imagined as a measure of the presence of hydrogen ions or H+ in the medium or the ability of the medium to produce H+ ions.

Building a pH probe

Glass electrode

What you need

How to build it

Things to keep in mind

Membrane electrode

What you need

How to build it

Things to keep in mind

pH amplifier circuit

List of components

Assembly

Interfacing and measuring

Calibrating a home-built pH probe

Glass electrode

Membrane electrode

Making it cooler

Geeking out

Links

Personal tools