As part of laboratory QA/QC, Scentroid provides an internationally recognized program to prepare and screen panel assessors according the EN13725:2003 standard. This is with the objective to obtain a reliable sensor with specific qualities to be selected as a panel member. Panel assessor s are formed by a comprehensive protocol in order to ensure their repeatability of their results. This protocol includes to make the new assessors familiar with the olfactometric procedures and with the interface of the olfactometer an how to select their responses. A certificate is issued after the completion of the training program and if the panelist meets the criteria for individual threshold estimate and the mean of the accepted reference value for the reference material.