SANAS no longer provides a list of various International Proficiency Testing Schemes that laboratories can make use of. Facilities may access the websites below for directories of proficiency testing schemes globally.
SANAS does not endorse any proficiency testing schemes, it is up to the individual to select the appropriate proficiency testing scheme that suits their needs.
SANAS does however, recommend that SANAS Accredited Proficiency Scheme Providers be used, where possible. This list can be accessed here
Documents recommended by the Specialist Technical Committees as guidance to testing laboratories: