The interlaboratory study “OFFICE CHAIRS DIMENSIONS” is a collaborative (non-evaluative) interlaboratory test on the methods for measurement of office chair dimensions. This is a sequential interlaboratory study involving a set of samples which are going to be sequentially sent to different laboratories to measure them. The measurements will be carried out according to the method introduced by the latest revision of EN 1335-1 currently at formal vote (will be published in 2020). This standard refers to ISO 24496 for the Chair Measurement Device (CMD) and for the measuring methods.
The objective of this interlaboratory study is to update the measurement uncertainties already estimated during the drafting of the ISO 24496 standard. Those uncertainties where determined from two collaborative interlaboratory studies. One was held in North America and organized by BIFMA (the study involved 13 teams who took measurements of 3 different chairs). The other was held in Europe and organized by the CEN/TC 207 (the study was based in Catas laboratory and involved 9 teams who took measurements of 3 different chairs).
For this study, each participating laboratory will receive four different office chairs, to be measured following the given instructions.
On this portal you can find all the information you need about the logistic operations (receiving, handling and shipping of the samples), the measuring procedure and the transmission of the results. Please note that the transmission of the measurements results will be managed only through this portal, by means of a personal PIN.
At the end of the collaborative trial, a general document reporting the statistical analysis of the results carried out in compliance with ISO 13528 is going to be released, sent to all the participants and presented during a meeting in Catas by the end of 2020. This general report is free of charge and is the main result of the study.
After this first sequential trial, the four sample chairs will be stored in Catas and remain available for further laboratories asking to measure them to assess their performance in using EN 1335-1 measurement method.
After this first sequential trial, the laboratories can submit again their results to this portal to obtain a new personalized report containing information about their own repeatability, reproducibility and z-scores calculated in compliance with ISO 17043 and ISO 13528. This report will be released upon payment of a fee and will be usable for the purpose of the accreditation of the method. More information about this personalized report and its cost will be given at the end of the first sequential trial.
FOR MORE INFORMATION, PLEASE WRITE TO: