Interlaboratory Proficiency Tests of the Quality Parameters of Fuels as an Effective Approach to Intralaboratory Inspection

Abstract

The many years of experience gained from the work of the Laboratory of Calorimetry of the Mendeleev All-Russia Research Institute of Metrology as a provider of interlaboratory proficiency tests of the quality parameters of coal and petroleum derivatives (residual fuel oil) is considered. A list of the inspection indicators of samples of coal and residual fuel oil is presented. A procedure for preparation and delivery of samples and a program for conducting tests are set forth, and an algorithm for statistical processing of the results of measurements obtained from participating laboratories is considered.