Review on Calibrated ITEQ Brake Fluid Tester Pen With 5 LED Indicators For Accurate Testing Of DOT3 And DOT4 Brake Fluids by Ghostnote Azevedo

Watch the video. I bought 15 of these to use in my shop for all out bay personnel. I tested 2 of the brake fluid testers on dot 3 and dot 4 brake fluid. I also used water to clean probes in between each use as to not contaminate the tool. The tool would reset to 0 before testing different fluid. I bought 4 different dot 3 and dot 4 fluids from different vendors. Each bottle was brand new. The tester reads greater than 4% on brand new dot 3 fluid. Which would indicate the fluid needs to be replaced. All testers were put into the fluid for 1 second as the directions say to do. The testers did show lower readings od moisture in both of the dot 4 fluids I tested. However, still did not get the same reading on the same fluid twice in a row. The test were inconclusive and not repeatable even with dot 4. Will be returning and using copper test straps moving forward. As seen in the video, I tested all new fluid with copper test straps that were sitting on top of each cup. They all read 0 copper content. As they should, being it is new fluid. Not a tool that should ever be used to determine whether you or your customer should use in determining the condition of brake fluid.