Ensuring numerical correctness using the Internet

Testing the numerical correctness of software used in metrology is necessary to establish the correctness and traceability of measurement results. Consideration is given to the way the Internet may be used to deliver mechanisms to support software testing. The mechanisms themselves depend on software and, consequently, if users are to have confidence in the results provided by the mechanisms, the software must be shown to be fit for purpose. Consideration is given to approaches to validating the software, based on publicly available guidelines.