These are narrow mouth reagent bottles available in polypropylene or low density polyethylene material.
The polypropylene bottles are rigid, translucent and have excellent contact clarity.
These bottles can be autoclaved when filled, as well when they are empty.
The low density polyethylene (LDPE) bottles also have excellent strength and are unbreakable.
The polypropylene cap has a built in seal ring to make these bottles leakproof.