Vacuum systems

Vacuum systems are the equipment that reduces pressure in a sealed space below atmospheric, drawing gas out to create the partial vacuum that filtration, evaporation, freeze drying and degassing all depend on. The Questpair catalogue holds 931 vacuum system listings from 18 verified suppliers and distributors across 9 countries, offered new, used and refurbished. 95 percent of the listings are used. Prices range from EUR 17 to EUR 64.567, a span that reflects the gap between a small benchtop pump and a complete industrial installation. A laboratory buyer looking for a vacuum pump works from pressure and flow rate first, then from the mechanism inside the pump, which is where the choice between an oil-sealed and a dry design is settled.