Copper Check is reliable, repeatable and 100% accurate. Copper Check puts a stop to guessing by providing an industry standard copper corrosion test strip that reveals the age and condition of DOT 3, 4 and 5.1 brake fluid. Technicians can now find broken brake fluid in less than 60 seconds.

Copper Check uses medical grade colorimetric test strip technology to discover copper ion contamination within brake fluid. Copper corrosion in brake fluid is created when oxygen and heat are introduced through the master cylinder cap, rubber hoses, and overheated calipers. Brake lines are coated with copper inside to make them seamless. However, copper is the first metal in the brake system to corrode. When copper ion levels reach 200 ppm, they begin to attack iron components, causing frozen calipers, malfunctioning ABS units, and leaking master cylinders.