pd4dThe Pd4d bands extend from 1 to 8 eV in binding energy and the Au 5d bands from 1 to 10 eV below the Fermi level. When the ratio AuPd is 3 to 1 up to 1.5 to 1, the band isSize: PD4D Endo scaling tip can be autoclaved between 5-20 minutes at 134°C The PD4D are used to remove subgingival calculus and interdental calculus.