Foxx Life Sciences clear glass roller bottles are designed with heavier wall thickness to with stand repeated sterilization. They come with Foxx’s patented GL45 VersaCap® which provides a stable transport and prevents slipping and breakage. The glass is 3.3 Borosilicate for optical clarity, interior surface smoothness, and the absence of glass imperfections. Glass wall thickness is 2.6 mm. The wider opening roller culture vessels provide easier access to the inside for removing cells or cleaning. These glass roller bottles comply with IS 1388 EN ISO 4796-3.