It is used to measure changes in mass of the sample during heating in different atmosre environments. It can work under different atmosre environments and keep vacuum. It can be used for high temperature testing of oxide or non-oxide. It is designed and manufactured in accordance with requirements as specified in Test Method for Oxidation Resistance of Refactories Containing Carbon (GB/T 13244-91) and research needs of high temperature nitridation process of refractory material.