Ideal for pharmaceutical or similar type packaging, this translucent bottle is molded from FDA-compliant polypropylene. It features deep square threads to withstand vibration and help prevent closure back-off during shipping. The inner bottle surface is smooth and rounded for easy cleaning and thorough emptying. Underside of bottle lists volume, material, and includes an indexing notch. Autoclavable to 121ºC (250ºF). Do not autoclave with caps in place.