A thistle tube is a piece of laboratory glassware consisting of a shaft of tube, with a reservoir and funnel-like section at the top. Thistle tubes are typically used by chemists to add liquid to an existing system or apparatus. Thistle funnels are used to add small volumes of liquids to an exact position.

A thistle tube is a piece of laboratory glassware consisting of a shaft of tube, with a reservoir and funnel-like section at the top. Thistle tubes are typically used by chemists to add liquid to an existing system or apparatus. Thistle funnels are used to add small volumes of liquids to an exact position.

Specific gravity bottles determine liquid densities by measuring the difference between an empty and filled bottle and dividing by an equal volume of water to find the specific gravity of the substance. These bottles are also known as a density bottle or relative-density bottles.

A Soxhlet extractor is laboratory equipment made of glass. Invented by Franz von Soxhlet in 1879. It has a flask, an extraction chamber, and a condenser. It can be used for solid-liquid extractions.

A Soxhlet extractor is laboratory equipment made of glass. Invented by Franz von Soxhlet in 1879. It has a flask, an extraction chamber, and a condenser. It can be used for solid-liquid extractions.

Soxhlet extraction condenser

A retort is a device used for distillation or dry distillation of substances. It consists of a spherical vessel with a long downward-pointing neck. The liquid to be distilled is placed in the vessel and heated. The neck acts as a condenser, allowing the vapors to condense and flow along the neck to a collection vessel placed underneath

Used when liquids have to be introduced into vessels under vacuum. Also known as a dropping funnel which is a type of laboratory glassware used to transfer fluids. They are fitted with a stopcock which allows the flow to be controlled. Dropping funnels are useful for adding reagents slowly, i.e. drop-wise. This may be desirable when the quick addition of the reagent may result in side reactions, or if the reaction is too vigorous

Liebig condenser. Designed to give turbulent flow in the water jacket with a comparatively slow rate of flow of coolant water by use of a small annular space. Description from https://www.austscientific.com.au/product/condensers/

Liebig condenser. Designed to give turbulent flow in the water jacket with a comparatively slow rate of flow of coolant water by use of a small annular space. Description from https://www.austscientific.com.au/product/condensers/

Jacketed coil condenser. A double surface condenser having a coil as an inner cooling surface. This type has approximately twice the surface of a plain double surface condenser of the same effective length.
Description from https://www.austscientific.com.au/product/condensers/

Graham condenser (Inland Revenue). Used for standard Inland Revenue test and control methods by brewers etc, the Inland Revenue condenser employs the use of coolant flow outside the coil. This condenser is very efficient but must not be used for fast rates of distillation. It is particularly useful for removing condensable vapours from non-condensable gases. Description from https://www.austscientific.com.au/product/condensers/

Graham condenser - coiled type. The surface area is considerably greater than the corresponding Liebig condenser of similar dimensions. The coil condenser is extremely efficient in the reflux mode where counter-current cooling is possible. Description from https://www.austscientific.com.au/product/condensers/

A laboratory fractionating column is a piece of glassware used to separate vaporized mixtures of liquid compounds with close volatility.

Dufton fractionating column condenser. Dufton columns have an accurately fitted Dufton glass spiral which can be removed for cleaning purposes etc. This type of column has proved exceedingly successful in gas analysis. Description from https://www.austscientific.com.au/product/condensers/

Davies double surface condenser. Increased surface area and effectiveness compared with a corresponding Liebig condenser. Description from https://www.austscientific.com.au/product/condensers/

Glass coiled condenser is used to cool and condense a gas back to a liquid, often as part of the process of chemical distillation

Allihn condenser or "bulb condenser" or "reflux condenser" named after Felix Richard Allihn (1854–1915).
An inexpensive condenser, giving greater surface area than the corresponding Liebig type due to the bulb sections. This type is normally used under reflux. Description from https://www.austscientific.com.au/product/condensers/