This article briefly outlines the traditional approach for keeping water mains clean, followed with an account of the Water Research Association of the United Kingdom (WRA) experience with foam swabs. The article lists the requirements for foam swabs, and it was discovered that polyurethane foam met all the conditions.

Full Text

Published Version
Open DOI Link

Get access to 115M+ research papers

Discover from 40M+ Open access, 2M+ Pre-prints, 9.5M Topics and 32K+ Journals.

Sign Up Now! It's FREE