Candidates must bring their own graphing calculator but may not bring a calculator manual. Graphing calculators will not be provided at the test center. Only the brand and models listed below may be used. Approved calculator brands and models are subject to change; if there is a change, candidates will be notified. Test administration staff will clear the memory of your calculator both before and after testing. Therefore, be sure to back up the memory on your calculator, including applications, to an external device before arriving at the test center.