Review on 🚗 Phoenix Systems BrakeStrip (3001-B): 100 Test Strips Per Tube, Brake Fluid Test Strips, FASCAR Compliant, Copper by Jeremy Byard

It's easy enough to use and test the color of the strip, but when the color approaches 100 or even 200 it becomes hard to tell. They are not different colors, just different shades. also when you switch between blue and yellow brake fluid to better distinguish when the line flush is complete. this hue tends to be distorted by the blue dye in the liquid. I think it's best to stick with the amber liquid with this product. I still use a separate water penetration tester. This test strip does not detect H2O contamination.