Berkshire Products, Knowledge Base What is the Best Low TOC Cleanroom Swab? Posted on March 17, 2017January 20, 2020 by Berkshire Corporation 17 Mar Q: What is the best low TOC cleanroom swab? A: Berkshire’s Large Knitted Polyester TOC swab, SKU LTP125TOC.25, has a QC lot certified with ultra-low TOC levels (<50ppb). Certificates of Conformance by lot number are available 24/7 on Berkshire.com. Food Contact Surfaces: How Do You Take Your Coffee – with Wine Or Cockroach Milk? What do microfiber wipes, van der Waals forces, cell phones and geckos have in common?