Laboratories Best Measurement Capability Validation

− The Accredited Laboratories at their Certificate have described its best measurement capabilities (BMCs) for the more or less routine calibrations. This BMCs were usually evaluated by interlaboratory comparisons (ILCs), the proficiency testing (PT) schemes as described by the ISO Guide 43. The NMIs traditionally organize the ILCs for the NABs providing the travelling standards, the reference(s) value(s) and at the end perform the statistical analysis of the laboratory results. The goal of this article is to discuss the existing approaches for ILCs evaluation in the calibration laboratories and propose a basis for the validation of the laboratories’ BMCs.