To eliminate dust contamination during cement sample testing in laboratory and dedust cement powder during laser diffraction test for particle size analysis by Sympatech machine. Because the laboratory areas are confined spaces where high filtration class of the vacuum unit is mandatory to avoid miscalculations during particle size analysis. Ruwac mobile industrial vacuum cleaner DS1220H, 35L dust bin capacity, ATEX Zone 22 II3D, 2.6m2 Pocket Filter Class M + 3.20m2 Residual Dust Filter Class H. ADVANTAGES: Reduce dust contamination within laboratory through efficient filtration Eliminate miscalculation during particle size analysis Long …