RD-20, RD-21 and
RD-23 End of Sale


RD-22 Primary Transfer Standards are still available.


RADIAN will continue to provide repair service for RD-20, RD-21 and RD-23 standards so long as parts are still available to facilitate those repairs. 


CALIBRATION services for RD-20, RD-21 and RD-23 standards will continue to be provided as is the case for ANY vintage of RADIAN reference standard ever produced.

If you have ANY questions about how best to proceed with migration from your RD Dytronic standard platform to the RX Xytronic platform, please contact the following...

RADIAN Sales Reps

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RADIAN Regional Solutions Managers

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RADIAN Technical Support

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