"role ENTERPRISES, INC."

With a long-lasting design, this 3-in-1 tester is a smart choice for student experiments in both the classroom and field applications.

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

Built for durability and ease of maintenance these 4-in-1 testers are well suited for laboratory experiments and outdoor field work.

These durable TDS 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 read out.

Lightweight, Versatile Unit