What Is a Retort Stand?
A retort stand, also known as a laboratory stand, ring stand or support stand, is used to hold laboratory apparatus securely during experiments. It typically consists of a weighted base and a vertical metal rod onto which clamps, bossheads and support rings can be attached.
Retort stands are commonly used in chemistry, biology and physics laboratories for supporting glassware, burettes, funnels, thermometers and other equipment. Their adjustable fittings allow apparatus to be positioned at the required height and angle for practical work.
Choosing the Right Retort Stand
When selecting a retort stand, consider the weight and size of the apparatus being supported, the height required and the stability of the overall setup.
Base Weight and Stability
A weighted base helps keep the stand stable when equipment is attached. Heavier bases may be useful for taller setups or when supporting larger apparatus, although stability also depends on how the load is positioned and secured.
Our range includes retort stands with 1.7 kg and 2.5 kg bases, providing options for different laboratory requirements.
Rod Height
The height of the support rod determines how much vertical adjustment is available for clamps and other fittings.
Our range includes 600 mm and 750 mm rod options, allowing you to select a stand suited to your experimental setup.
Compatibility with Clamps and Bossheads
Check that your chosen bossheads, clamps and support rings are compatible with the stand rod and with the apparatus being held.
Rod diameter, clamp opening and fitting design can vary between products. Not all laboratory fittings are universally interchangeable.
Retort Stand Accessories and Laboratory Clamps
A retort stand can be adapted for many different experiments using suitable clamps and support fittings.
Bossheads
Bossheads connect laboratory clamps or support rods to a retort stand. They allow the position and angle of attached equipment to be adjusted before being tightened securely.
Our range includes chrome-plated zinc alloy and die-cast aluminium alloy bossheads.
Retort Clamps
Retort clamps, sometimes called utility clamps or three-prong laboratory clamps, are used to hold apparatus such as test tubes, flasks and other laboratory equipment.
Depending on the design, the jaws may have cork or rubber coverings to help grip and protect the item being supported.
Select a clamp with a suitable opening range and jaw design for the apparatus. Avoid overtightening clamps around glassware.
Burette Clamps
Burette clamps are designed to hold burettes vertically during titrations and other liquid measurement procedures.
Single and double burette clamps are available, including polypropylene and Fisher-style designs.
A double burette clamp can be useful when two burettes need to be positioned on the same stand, provided the overall arrangement remains stable.
Retort Rings
Retort rings, also called iron rings or support rings, provide a circular support for suitable laboratory apparatus.
They are commonly used with appropriate wire gauze, funnels or other supporting accessories in laboratory setups.
Our range includes retort rings in several diameters with integrated bossheads. Choose a ring size that provides suitable support for the apparatus and experiment.
Thermometer Clamps
Thermometer clamps help position laboratory thermometers during experiments involving temperature measurement.
They allow the thermometer to be held in place without requiring it to be supported by hand.
Common Uses for Retort Equipment
Retort stands and accessories are used in a wide range of practical science activities, including:
- Titration: Holding a burette vertically above a flask or beaker.
- Filtration: Supporting a funnel and filter paper above a receiving vessel.
- Heating experiments: Positioning suitable apparatus above a heat source using appropriate supports and heat-resistant accessories.
- Temperature measurement: Securing a thermometer at a suitable position within an experimental setup.
- General laboratory experiments: Holding glassware, sensors and other equipment in a stable, adjustable position.
Retort equipment is widely used in New Zealand secondary school science laboratories, including practical work in chemistry, physics and biology, as well as tertiary education, research and technical laboratories.
For laboratory heating setups, explore our Bunsen Burners & Accessories range.
Safe Use of Retort Stands and Clamps
Correct setup is important when using retort equipment, particularly when supporting glassware, liquids or apparatus near a heat source.
- Place the stand on a stable, level laboratory bench.
- Position heavier apparatus close to the support rod where practical.
- Ensure bossheads and clamps are securely tightened before starting an experiment.
- Check that the clamp opening and grip are suitable for the apparatus.
- Avoid excessive pressure on glassware, which may cause damage or breakage.
- Use appropriate heat-resistant accessories when working with heating equipment.
- Check that the assembled equipment remains stable throughout the experiment.
For school laboratories, students should use retort equipment under appropriate supervision and follow established laboratory safety procedures.
Frequently Asked Questions
What is a retort stand used for?
A retort stand is used to support laboratory apparatus during experiments. It can hold burettes, funnels, flasks, thermometers and other equipment using suitable clamps, bossheads and support rings.
What is another name for a retort stand?
A retort stand is also commonly called a laboratory stand, ring stand or support stand. The term ring stand is particularly common in North America.
What is a bosshead used for in a laboratory?
A bosshead is a connecting fitting used to attach clamps, rings or support rods to a retort stand. It allows equipment to be positioned and secured at the required height and angle.
What is the difference between a retort clamp and a burette clamp?
A retort clamp is a general-purpose laboratory clamp used to hold different types of apparatus, while a burette clamp is specifically designed to hold a burette securely in a vertical position during titrations and other experiments.
Which retort stand should I choose?
Choose a retort stand based on the height, weight and arrangement of the apparatus being supported. A heavier base and taller rod may be suitable for larger experimental setups, but the overall stability of the equipment must also be considered.
Can retort stands be used with Bunsen burners?
Yes. Retort stands can be used to support suitable laboratory apparatus during experiments involving Bunsen burners. Appropriate clamps, support rings and heat-resistant accessories must be used, with sufficient clearance from the flame.
