Ginsberg Scientific Inc.

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Conductivity of Solutions
* #310 Conductivity of Solutions, (Conductivity Tester). 
For showing the electrical properties of liquids.  Consists of a molded socket on a PVC cover, provided with binding posts for connection of two wire cords.  Two electrodes are internally connected to the lamp circuit.  The cover is designed to fit a clear glass tumbler.  Light bulb, glass tumbler, and instructions sheets are provided.

#315 Conductivity Of Solutions with Plastic Jar
The unit the same as the #310, only provided with a plastic tumbler.