Abstract
One of Seah's important achievements is the establishment of calibration binding energies for X-ray photoelectron spectrometers. The energy calibration method for commercial XPS instruments is described in the ISO standard (ISO 15472), which uses the calibration energy values compiled by Seah in a paper [1] in 1998．In this commentary, I will introduce how the energy standard was established by Seah, mainly referencing the paper [1].
