What is the difference between ISBER BAT and BBMRI-ERIC SAS?

These are two separate tools
The BBMRI-ERIC Self-Assessment Survey (SAS) is developed by BBMRI-ERIC. This tool is available to members of BBMRI-ERIC for free, and non BBMRI-ERIC members can take if after paying a fee. It is developed to check how biobanks are performing regarding the ISO norms. This is the questionnaire that is used in the B3-ISO project and addressed in a B3-ISO webinar.

The ISBER BAT (Biobank Assessment Tool) is a questionnaire developed by the International Society for Biological and Environmental Repositories (ISBER) and allows a biobanks to check how they are performing regarding the ISBER Best Practices. Next to that, it provides some high-level references to applicable ISO20387 clauses, but not all content from ISO20387 is covered by the questions of this survey. Along with the certificate and the score in %, you get a report that can be imported in excel for further use. More info can be found at https://www.isber.org/general/custom.asp?page=BAT. This tool is not related to the B3-ISO project.