Profile: Xi'an Heb Biotechnology Co., Ltd. is a manufacturer of rotary evaporators and cylindrical jacketed reactors. We are an ISO 9001:2000 certified company. We manufacture LCD rotary evaporators, water distillers, incubators & ovens, centrifuges, and ultrasonic cleaners. Considering the small size of labs, we have designed water jet aspirator pumps. The main machine is made of stainless steel. It is installed with outer circulating device. The vacuum degree is stable. It has an elegant, unique appearance, delicate and fragile. The machine is installed with two vacuum meters, and two sets of tips which can be used independently or in parallel connection. The main machine is made of stainless steel plate and pressed into an elegant shape. The box body is made of special engineering plastic. It is installed with special fluid silencer, reducing friction noise created by liquid and gas contained in water, making the vacuum degree higher & stable. It features corrosion resistance, is pollution free, makes low noise and is easy to move. It is also possible to install vacuum adjusting valve to make operation more convenient. The appearance of III A Type water circulating multipurpose vacuum pump is the same as those SHB-III and SHB-III S Type vacuum pumps. The water storage tank is made of newly developed special plastic which can resist against corrosion and dissolution brought about by operation of organic chemical matters such as acetone & diethyl ether chloroform.