In industries ranging from graphite electrode production to refractory manufacturing, the quality and performance of carbonaceous materials are determined in large part by their structural purity. The Coking Solid Quinoline Insoluble (QI) Matter Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd. provides a reliable, standardized method to quantify insoluble residues in coke and pitch samples, ensuring material consistency and optimal downstream behavior.

Changsha Friend Experimental Analytical Instrument Co., Ltd​ is pleased to announce the official launch of its new Lubricating Oil Evaporation Loss Tester, now available for distribution to research laboratories, lubricant manufacturers, and quality‑control departments worldwide. Designed in compliance with international test standards, this instrument provides an accurate and reproducible way to measure the tendency of lubricating oils to evaporate under elevated temperature and airflow conditions.

Changsha Friend Experimental Analytical Instrument Co., Ltd. is proud to introduce its latest Automatic Open Cup Flash Point Tester, engineered for laboratories and production facilities that require rigorous, repeatable flash point measurements for petroleum products, solvents, and chemical intermediates. Flash point data is critical for safety classification, transport regulation compliance, and formulation development.

In today’s industrial environment, the reliability and stability of lubricating oils directly influence the performance and durability of mechanical systems. As engines and machines continue to operate under increasing thermal stress, understanding how lubricants behave under high temperatures becomes essential. One of the most crucial parameters in this regard is the evaporation loss, which affects oil longevity, engine cleanliness, and overall maintenance costs. The Lubricating Oil Evaporation Loss Tester, developed and supplied by Changsha Friend Experimental Analytical Instrument Co., Ltd. , provides an essential solution for accurately determining the evaporation characteristics of lubricants under controlled thermal conditions.

Among the most important indicators of flammability for petroleum products and chemical substances is the flash point. This critical safety parameter is defined as the lowest temperature at which a liquid emits vapors that can ignite in the presence of an ignition source. The Automatic Open Cup Flash Point Tester, offered by Changsha Friend Experimental Analysis Instrument Co.,Ltd., is an indispensable tool in laboratories that routinely evaluate fuels, lubricants, and volatile organic compounds (VOCs).