United Scientific™ Auditory Conductivity Indicator

The more free ions in a solution, the louder the buzzer sounds.

• Buzzer provides an audible indicator of the conductivity of a solution Reusable design

Investigate the conductivity of a solution with this excellent alternative to light only indicators. The current flow to a buzzer changes with the conductivity of a solution. The more free ions in a solution, the better it conducts electricity and the louder the buzzer sounds. Includes an on/off button with an LED to indicate if the unit is turned on.

 : Requires a 9 V battery (not included).

 : Includes activity guide.