"AP PHYSICS LAB 9 STATIC EQUILIBRIUM."

Accurate answers in five seconds with a meter that automatically selects proper range and displays the exact answer.

These durable EC testers feature a replaceable electrode and are ideal for student use in the classroom and field environments.

With a long-lasting design, these 2-in1 testers are a smart choice for student experiments in both the classroom and field applications.

Simple-to-use benchtop meter designed to easily measure conductivity, TDS and salinity.