Grinding a concrete floor generates a large amount of contamination in the form of polished excavated material. To prevent the debris from returning to the floor in the form of dust or settling on the elements around the grinder, it is necessary to use a dust extractor during grinding. The dust extractor connected to the grinding machine during operation collects the material dust immediately from the grinding site. Lavina or Delfin extractor is essential for dry grinding work. The dust extractor should be properly selected for the machine which it will work with. Large grinding machines, such as Lavina L32, Lavina L25, require the use of appropriate dust extractor that achieves adequate power and suction power. Smaller dust extractors are dedicated for smaller grinding machines.