Keller G L, Mattingly S F, Knapke F B
Lab Anim Sci. 1983 Dec;33(6):580-2.
The practice of using a protective filter apparatus when housing five mice per cage resulted in ammonia levels exceeding 25 ppm. A forced-air individually ventilated caging system was constructed using polyvinyl-chloride tubing fitted to a rodent rack. The ammonia level was decreased using this ventilation system.
当每个笼子饲养五只小鼠时，使用保护过滤装置会导致氨水平超过25 ppm。使用安装在啮齿动物饲养架上的聚氯乙烯管构建了一个强制通风的独立通风笼养系统。使用该通风系统后，氨水平降低了。
