The circulating water with a vacuum pump with a vacuum pump circulating water is based on laboratory area of ??small features, with reference to Japan desktop pump, disposable shell molding, reduced size and improvement made with a small size, light weight, good looks, double table stud pumping, four table four taps, and the same double-sided with a vacuum pump, even at the user visual presentation, also also in any side of the boot, shutdown. (1) The machine adopts the double-tap, and is equipped with two vacuum table can be used alone or used in parallel. (2) four-tap new and improved anti-corrosion, can be used alone or in parallel, equipped with four vacuum table. (3) The host two materials manufacturing stainless steel movement and anti-corrosion material movement with a strong acid, alkali, corrosion. (4) of this machine with acid, alkali and corrosion resistance; non-polluting, low noise, easy to move, but also according to the user needs to install vacuum regulator valve. Model SHB-III Ultimate vacuum 0.098 pumping speed 10L/min × 2 power 220V 180W Description stainless steel pump, double table double tap with 2L, 5L evaporator / reactor