Catalog No. 10-500-26 Aijiren Techbrand™ Externally and Internally Threaded $78.81 - $669.35 Description Trust our low-level certified vials for Total Organic Carbon testing and sampling. Manufactured, tested and packaged by exacting standards,Aijiren Tech™ TOC Certified Containers are certified to contribute <10ppb or < 20ppb TOC as background.