已经对控制空气中微生物的各种技术进行了详细的研究。本试验计划的目的是确定干燥剂作用对空气中微生物的影响。所使用的技术是在气流通过干燥剂床前后对其进行取样，然后培养捕获在取样装置中的微生物，并对产生的菌落进行计数。

Detailed studies have been made of various techniques for the control of airborne microorganisms.The purpose of this test program was to determine the effects of desiccant action on airborne microorganisms. The technique used was to sample an air stream before and after it had passed through a desiccant bed and then to grow the microorganisms trapped in the sampling device and count the resulting colonies.