Mineral or vegetable, emulsifiable or whole, for tracks or machine tools, oils and chemical products must be chosen prudently for production needs with an eye on the health of whoever uses it. ”Cooling lubricant”, lubricates and therefore decreases the cutting power and friction petween the tool piece and the swarf, it reduces the heat generated and limits the thermal expansion on the machine and on the piece and cleans by removing swarf. The correct choice of coling lubricant significantly influences the quality of work, tool performance, state of mechanical machining and human health.