The flow rate of the gas which produced by the apparatus is stable. Because of built-in (durable)synthetic carbon molecular sieve, the purity of nitrogen is more higher. The operation of nitrogen is simple, as soon as you turn on the switch, the apparatus can provide higher purity of nitrogen incessantly. At the same time, it works stable and reliable. Also it has the advantsge of no man on duty in 24 hours. In the case of no any regulation and minimum maintenance, the apparatus can be trouble-free operation. It can replace the the traditional nitrogen tank. Form the safety aspect to consider, the nitrogen apparatus produce nitrogen in the low pressure to replace high-pressure bottle or liquid nitrogen bottle.