Check if your frying oil is safe to use with our Be Safe Frying Oil Quality Test Strips. These test strips are low range, meaning they deliver accurate FFA concentrating ratings. To save on money and supplies, this frying oil test kit avoids premature dumping of oil. It also helps remove the overuse of frying oil which affects food quality. These frying oil testers work to measure the shortening breakdown in your fryer to determine its use. Made from food grade paper, these fryer oil test strips check your oil without the risk of any harmful byproducts. To use this oil testing kit, wait until oil has cooled down completely, then hold a testing strip in the oil for around two seconds. Remove the strip and wait 30 seconds before comparing it to the evaluation guide provided. Each frying oil quality test strip measures 3.75 inches long by 1.25 inches wide. Sold in a 100 count box.