The Technical Diagnostics Laboratory is equipped not only with instruments for determining the operating states of machines and equipment but especially for monitoring the quality of lubricants and fuels. From the field of tribodidiagnostics we can mention tests to determine the following properties: Kinematic viscosity at 40°C or 100°C (CSN EN ISO 3104), the Viscosity index (CSN ISO 2909), TAN (acid value) (CSN ISO 6618), Water content coulometrically according to K.F (CSN EN ISO 12937), Mechanical impurities (CSN 65 6220), Purity code microscopically (CSN ISO 4406, CSN 65 6206, NAS 1 638, AS 4059, GOST 1 7216), Element analysis XRF (total 48 elements), IR spectrometry, Density (CSN EN ISO 3675), Cleveland flash point (CSN EN ISO 2592), Determination of the distillation curve (CSN EN ISO 3405), Flowability point up to -24°C, to -42°C, over -42°C (CSN ISO 3016), Determination of filterability CFPP (CSN EN 116), Determination of grease penetration (CSN ISO 2137), Grease dropping point determination (CSN ISO 2176).