As one of the key indicators on super-elastic performance, active Af is of vital importance to secure the realization of super-elastic functionality. Since most of Nitinol implants are small in size (at the level of mm) and light in weight (at the level of mg), the conventional testing methods listed in the attachment of ASTM F2082/F2082M-16 unable to test precisely the active Af. Af tester can wonderfully do such testing jobs with characteristics of ：
· True Free Recovery
· Non-destructive
· Measure various devices and sizes
· High-throughput with both testing data and videos
· Multiple samples in one run
· Easy-to-use
· Portable
The testing results can be read in any of the following Af determination methods: Tangent lines and 95% recovery, from the testingcurves, as specified by ASTM F2082/F2082M-16.
