This Roman Amphora is made out of glass and includes a stopper.

Roman Amphora

This Roman Amphora is made out of glass and includes a stopper.

A condenser built from lab materials.

Condenser

A condenser built from lab materials.

Cork material is an impermeable, buoyant material, a prime-subset of generic cork tissue that is harvested for commercial use primarily from Quercus suber that is endemic to southwest Europe and northwest Africa. Cork is composed of suberin, a hydrophobic substance, and because of its impermeability, buoyancy, elasticity, and fire resistance, it is used in a variety of products, the most common of which is for wine stoppers.

Cork Bottle Stopper

Cork material is an impermeable, buoyant material, a prime-subset of generic cork tissue that is harvested…

This modern inkstand is made with an adjustable stopper. It is used to store ink for writing.

Modern Inkstand

This modern inkstand is made with an adjustable stopper. It is used to store ink for writing.

"The most common and, for many purposes, the most convenient form of condenser is the Leyden jar. This consists of a glass jar, coated within and without for about two-thirds its height with tinfoil, and a metallic rod that communicates by means of a small chain with the inner coat, and terminates above in a knob or a disk." — Avery, 1895

Leyden Jar

"The most common and, for many purposes, the most convenient form of condenser is the Leyden jar. This…

This glass jug is made in a richly colored glass. It has a leaf design around the center, and a stopper covering the jug.

Glass Jug

This glass jug is made in a richly colored glass. It has a leaf design around the center, and a stopper…

Electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark

Spark Plug

Electrical device that fits into the cylinder head of an internal-combustion engine and ignites the…

A usually cylindrical piece of material used as a bottle stopper

Bottle Stopper

A usually cylindrical piece of material used as a bottle stopper

An empty vial with a cork stopper.

Vial, empty

An empty vial with a cork stopper.

A vial, approximately one third full of a dark granular substance, with a cork stopper.

One-third full vial

A vial, approximately one third full of a dark granular substance, with a cork stopper.