1968年，一个标准项目委员会完成了空气净化设备测试标准的工作。新标准ASHRAE标准52-68的标题为“用于去除颗粒物的一般通风中的空气净化装置的测试方法”，该标准于1969年首次发布。本标准中描述的试验程序基于多年来用于确定空气净化设备比较性能的原则。这些基本原则和一般程序已被国家标准局和空气过滤器研究所使用多年，空气净化装置的用户、规范制定者和制造商都熟悉和理解。新标准试图消除当时使用的多种测试程序造成的混乱，并引起了相当大的兴趣。1972年进行了第二次重印，并进行了更正。1972年成立了一个后续委员会，目的是组织一个测试项目，通过该项目，那些已经建立了测试台并开始使用52台计算机的实验室可以进行测试- 68人可以将他们的结果联系起来。委员会的目标是纠正标准中的任何错误或遗漏，以在各种参与设施中产生可复制的结果。该委员会的最终报告于1974年8月27日发布，然而，在执行该委员会的建议时出现了一些问题，需要进行一些额外的工作来解决这些问题。今天，这项基本测试工作已经完成，ASHRAE已经采纳了由此产生的对标准的修订，并体现在当前版本的标准52-76中。本文详细介绍了该标准的试验情况。引文:研讨会论文，佐治亚州亚特兰大，1978年

In 1968, a Standards Project Committee completed work on a test standard for air cleaning devices. The new standard, ASHRAE Standard 52-68 entitledMethod of Testing Air Cleaning Devices Used in General Ventilation for Removing Particulate Matterwas first published in 1969. The test procedures described in this standard were based on principles employed for many years in determining comparative performance of air cleaning equipment. These basic principles and general procedures had been used for years by the National Bureau of Standards and the Air Filter Institute and were familiar and understood by the users, specifiers and manufacturers of air cleaning devices. The new standard attempted to eliminate confusion created by the multiplicity of test procedures in use at the time and generated a considerable amount of interest. A second reprinting with corrections was made in 1972.A follow-up committee was formed in 1972 for the purpose of organizing a test program through which those laboratories who had built test stands, and had begun using 52-68 could correlate their results. The objective of the committee was to correct any errors or omissions in the standard to yield reproducible results in the various participating facilities. A final report of this committee was issued August 27, 1974, however, some problems developed in implementing the recommendations of the committee and some additional work was required to resolve these problem areas. Today, this basic test work is complete and the resulting revisions to the standard have been adopted by ASHRAE and are embodied in the current issue of the Standard 52-76. This paper details the tests of the standard.