| Cap is made with virgin, high-temperature poplypropylene (PP). The cap is liner-free and leak proof. |
| Seal Ring is molded inside the cap and fits tightly against the bottle neck. |
| Neck Ring has smooth interior so there is no fluid entrapment and no back flow contamination. |
| Graduation Markings are optically clear and molded-in for convenience. |
| Uniformed thick walls with beveled edges, designed for durability, strength, clarity and improved heath penetration. |
| Beveled Edges along the bottle sides insure an easy grip. They are also designed so entire bottle fits into most shaking incubators for direct culture applications. |
| Stable Base insures that bottle would not tip over during fill. |
