The 3M low range fryer oil quality test strips are a great way to measure the shortening breakdown in your fryer. Compared to standard test strips, the low range strips deliver accurate FFA (free fatty acid) concentration ratings from 1 to 2.5 percent, providing a more precise reading of early oil degradation. These test strips help save money by preventing premature dumping of fryer oil. Of course, its also important not to overuse your fryer oil, as that can result in poor food quality. These strips take the guesswork out of deciding when to change your oil so you can get the most out of your supply while maintaining consistent products. Theyre food safe, and they work in operating temperatures of 325 to 400 degrees Fahrenheit. To test your fryer oil, use tongs to hold the test strip by the long white end, and dip the test strip into hot oil so all of the blue bands are submerged. Hold the test strip in the oil for 5 seconds, then remove it and wait 30 seconds. Next, hold the strip to the light, compare it to the included evaluation guide, and follow the recommendations. To ensure proper functionality, these low range test strips should not be stored in humid conditions or in an area where they may be exposed to water or oil before use. Always keep test strip bottles tightly closed and store any bottles not in use in a refrigerator or freezer.