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As manufacturing processes in a myriad of industries are faced with increasingly strict regulatory requirements designed to protect the processes and the end products from being contaminated by foreign substances, companies around the globe are turning to cleanroom technology to facilitate the production of their products. In cleanrooms, the size and number of airborne particles are strictly controlled. Mitigating steps must be taken to ensure personnel and equipment integrated into the cleanroom environment do not add significantly to the particle load inside the space. For successful cleanroom applications, it is essential that any equipment used inside the cleanroom be tested and cleared for use in those environments. Recently, Masterflex L/S and Masterflex I/P process pumps underwent this evaluation and were proven to successfully meet or exceed requirements for use in a cleanroom environment.
Cole-Parmer recently submitted its Masterflex L/S and Masterflex I/P process pumps to an independent testing agency (Acorn Industries, Inc., under the direction of Dr. Philip R. Austin) to certify the pumps for use in ISO Class 5 (Class 100) Cleanroom conditions. To achieve the certification, each pump had to undergo a rigorous evaluation process that involved multiple testing steps.
The primary focus of the testing involved evaluation of each pump for material shedding. After thoroughly washing the pumps with ultraclean spectrographic-grade alcohol, random locations on the external surfaces of the pumps were rewetted with spectrographic-grade alcohol. The solvent was removed from each surface, along with any collected particles, using a membrane filter. A total of ten sets of filters were collected at twelve intervals over a 100-hour span and then analyzed for particulate load. In addition to the membrane samples, a continuous, automatic airborne particle counter was used at different positions relative to the pump head. During the 100-hour test period, the data of the particle counter was reviewed and reset every ten hours. The results for both pumps showed no base material emissions from any pump surfaces.
The Masterflex L/S and I/P process pumps submitted for evaluation were able to be successfully certified as “Acceptable for Use” in Class 100 Cleanroom conditions per Federal Standard 209E as well as in Class 5 Cleanroom conditions per ISO 14644-1. Head Investigator, Dr. Philip R. Austin, who authored the standard used globally for cleanroom environments indicated the following:
If these cleaning and preparation steps are followed, both the Masterflex L/S and Masterflex I/P process pumps – when coupled with correctly prepared tubing – can be used safely in ISO Class 5 (Class 100) cleanroom conditions.
Learn more about Cleanrooms: What Makes Cleanroom a Clean Room