ISSA and CIRI Announce Improvements to the Clean Standard

ISSA and the Cleaning Industry Research Institute (CIRI) announced improvements to the ISSA Standard for Measuring the Effectiveness of Cleaning in K-12 Schools (Clean Standard) that enhance its use in evaluating cleaning processes at school facilities.


The Clean Standard provides K-12 schools with a tool that helps them evaluate and monitor the effectiveness of their cleaning processes using both a quantitative measure (i.e., ATP meters) and traditional inspection methods. The ability to objectively evaluate cleaning processes and products is critical to providing a safe and healthy indoor environment for school-age children.

The recent enhancements to the Clean Standard include updated values that define “effective cleaning,” which are central to the standard.  Specifically, revisions have been made to the table at Section 5.5 that set forth the values that define “effective cleaning” for the range of ATP values with Hygiena SystemSure Plus. The values for other ATP systems in the Clean Standard (Charm Sciences NOVALUM and 3M Uni-Lite NG) remain the same. These revisions are the result of intensive field study during 2014 and substantiated by industry and research scientists, and are now reflected in the latest edition of the Clean Standard at

Since it was first issued, the Clean Standard online toolkit has been downloaded more than 2,000 times. The standard’s quantitative and qualitative measurement tools have been used by schools, cleaning service contractors, distributors, and others in the commercial cleaning marketplace as a way of evaluating and improving their cleaning processes. In addition, certification and training programs have developed around the Clean Standard, such as the program offered by CIRI (see for details).

ISSA and CIRI consider the Clean Standard a living document and invite users’ feedback regarding the ATP values and any other aspects of the standard—including its applicability to other indoor environments including office buildings and other institutional facilities.  Send your comments and feedback to ISSA Environmental Affairs Director, Bill Balek at [email protected]  


About CIRI


The Cleaning Industry Research Institute’s (CIRI) mission is to raise awareness of the importance of cleaning through scientific research. Its goal is to expand on existing research, help its members to be more effective, improve people’s understanding of the importance of cleaning, and influence the development of public policy. For more information, visit

About ISSA


As the leading trade association for the cleaning industry worldwide, ISSA is committed to helping its members change the way the world views cleaning. ISSA promotes the vision that cleaning is an investment in human health, the environment, and an improved bottom line.

The association’s more than 6,400 members include distributors, manufacturers, manufacturer representatives, building service contractors, in-house service providers, and associated service members. ISSA helps increase professionalism and member success by offering business tools, educational products, industry standards, publications, events, and legislative and regulatory services that specifically focus on the professional cleaning industry and the value it provides.

For more information,  visit or call 800-225-4772 (North America) or 847-982-0800.