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"We may test other solutions by arranging the following circuit, including a source of current, the substance to be tested, and some instrument to detect the passage of the current." -Brownlee 1907

Conductivity Test

"We may test other solutions by arranging the following circuit, including a source of current, the…

This illustration shows an apparatus used to examine the conductivity of solutions.

Electric Apparatus

This illustration shows an apparatus used to examine the conductivity of solutions.