Vials Cleaned for TOC (Total Organic Carbon) - Qorpak. 40ml Glass TOC Vials with White Polypropylene Hole Cap, PTFE/Silicone Septa and Opaque HDPE Dust Cover Qorpak offers pre-cleaned 40 ml glass vials certified for Total Organic Carbon (TOC vials). We offer TOC vials certified to contain less than 10 Parts Per Billion (PPB) and less than 20 Parts Per Billion (PPB) for use for pharmaceutical and biotechnology applications.