PTB and NPL agree, that NPL will perform calibrations on high frequency impedances in a frequency range from 1 MHz to 10 MHz (resistances, capacitances, inductances) and four terminal impedances for use with electronic impedance meters in a broader frequency range for customers of PTB.
Final Report 2013-10-01
NPL has stopped to provide this service
Progress Report 2004-03-31
NPL will inform PTB in due time, at least one year in advance, if for any reasons they will no longer be able to maintain this service.