These handy little strips will help you sell more brake fluid flush services. Now you can use the FASCAR rating system for a quick visual inspection to determine the contamination level of brake fluid. These strips do not test for moisture or PH, They test for true contamination. In just seconds you will lnow if a cmplete fluid flush should be recommended per UICS. Each test strip will test for virtual age of brake fluid. 100 test strips per tube.