Controlled Environments 


Electronics | Pharmaceutical  |  Medical Devices    

Research & Development  |  Other Critical Manufacturing

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Cleaning is an essential element of contamination control. That is why Harvard has established Standard Operating Procedures for Cleaning & Maintenance of Controlled Environments.

Our SOP details cleaning regulations recommended as a minimum for the successful operation of a clean environment in compliance with Federal and ISO Standards, within their specified classifications, from class 1 (M1.5) to 100,000 (M6.5) or ISO 14644-1: Class 3 – Class 9.

Our experienced team can help to develop an effective service program, or customize our staff training and work instructions to align with your established protocols and procedures.


To reduce a cleanroom’s risks of contamination, it is essential that an effective preventative cleaning program be implemented and maintained consistently throughout the life of the cleanroom or controlled environment.

Harvard’s techniques are proven to remove dirt, dust, and other contaminants from your cleanroom or controlled area, while preventing any contamination in the process.


All personnel performing housekeeping maintenance within controlled environments have received specialized training to include:

• Cleanroom techniques and procedures

• Tasks and frequencies for the specific cleanroom class

• Products utilized per client specifications

• Contamination control

• Proper gowning


Standard Operating Procedures for Cleaning & Maintenance of Controlled Environments

Federal and ISO Standards

Contamination Control

Customized Work Plan

Customized Statement of Work, Reporting, and Invoicing

Specialized Job Cards

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Our cleaning service meets Green Seal™ Standard GS-42 based on waste minimization, building-specific operational procedures, effective custodial training, and use of products with limits on human & environmental toxicity. GreenSeal.org.
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