Graushaar - Your specialist for pure cooling and lubrication In the metal industry, the purity of the lubricants not only has a lasting effect on the quality of the finished parts and lifetime of the machines and tools. Additives in cooling lubricants cause significant health problems in many cases. At Graushaar we rely on high-quality, safe sanitary lubricants from Master Fluid Solutions. In addition, we recommend Diedron filter systems that specifically remove particles from cooling lubricants. As experts in the field of mechanical metal and plastics technology we know the market and the requirements of companies. We also know the skepticism about empty promises of the manufacturers. Let our products speak for themselves. In personal consultations at your company we determine the suitable coolant or filter system.