How does one make rough measurements of water quality or purity in a primitive environment? We talked about making a number of different types of water distillers. But then how does one measure how good the result is? Taste it is one simple test, but how about coming up with a more objective approach. The challenge then is to put together a meter from commonly available parts that will do a reasonably well job of measuring in relative terms water purity with distilled being the top of the scale.
Measuring Purity of Water in a Primitive Environment.
