Industrial lubricants comprise a wide variety of products which, depending on their application, differ widely in their chemical and physical properties. It can be said that industrial lubricants involve all classes of lubricants applied in practice, including gases (mostly air and carbon dioxide, a future very special gas lubricant seems to be nitrogen), various liquid products (mineral oils, animal and vegetable oils, derivatives of tall oil fatty acids, synthetic oils, water-based fluids, etc.), greases (simple soap greases, complex soap greases, greases with pigments, minerals, polymers...