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This document describes tools and gives guidance concerning interlaboratory trials related to fire effluent analyses. It explains the relative contributions from the physical fire model and analytical techniques to evaluate trueness and fidelity. It also explains the difficulties involved with the interpretation of round-robin data and with the evaluation of trueness in fire effluent analyses.

This document complements ISO 12828-1, which deals with limits of quantification and detection and ISO 12828-2, which deals with interlaboratory validation of analytical methods. It is a toolbox useful in the framework of ISO/IEC 17025 assessment of any fire laboratory.

Examples of existing standards where the information contained in this document can be used are the analytical chemical methods in ISO 19701^[2], ISO 19702^[3], ISO 5660-1^[4], and the chemical measurements in the methods discussed in ISO/TR 16312-2, ISO 16405^[6], ISO/TS 19021^[7], or their application to fire toxicity assessment using ISO 13571^[1] and ISO 13344^[8].