Wide mouth Reagent Bottles with a dust proof glass stopper are useful for storing both liquids and powders. These bottle mouth and stopper stem are machine ground. This glass-to-glass joint is an air-tight seal without the use of a rubber or cork stopper.

These narrow-mouth, amber glass reagent bottles with ground-in glass stoppers are useful for storing light-sensitive solutions. The ground-in glass stoppers provide an air-tight fit. Ideal for safely storing chemicals in liquid or powder form.