Well as far as I see, DIN/ISO 13992:2014 would be the tech binding certification. The testing is fairly extensive for matching the number on the binding. But the leeway is 10-25% based on the test.
Of course tech bindings are a wuagmire with the different boot fittings and soles.
Lou Dawson’s summary of the published document from 2014. (These are his words) You have to pay to get the published standard-
Lou Dawson’s summary of the published document from 2014. (These are his words) You have to pay to get the published standard-
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1. In both alpine and ski touring binding standards, the testing procedure begins with six bindings.
2. Four out of the six bindings are randomly chosen and tested for reproducibility of release values, as well as the accuracy of the release setting scale on the binding conforming to lateral (side) and vertical (upward) torque standards in the ISO specifications. When set to the same DIN number, upward and side release have to be within 10% of each other, as well as being within 10% of the standard value.
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Much more here detailing all the loading tests.
Lay explanation of DIN ISO ski binding standards 13992 and 9462 for ski touring and backcountry mountaineering, safety and testing.
www.wildsnow.com
The standard-
Alpine touring ski-bindings — Requirements and test methods
www.iso.org
I think these are now the only tech bindings available certified by TUV:
Dynafit Rotation ST
Fritschi -
Tecton, Vipec Evo
Marker Kingpin