Retort Clamp for Burette

Quick Answer: The Retort Clamp for Burette is a rod-mounted clamp that holds a burette upright on a retort stand through a boss head. The listing image shows a blue cast body with small V-shaped jaws closed by a wing screw, a shape that centres a round burette barrel in the grip.

V-Shaped Jaws for a Round Barrel

A burette is a narrow, straight tube, so a clamp built for it can be small and simple. V-shaped jaws, like those in the photograph, meet the barrel along four lines, two in each jaw, so the burette settles into the centre of the V as the screw is tightened. That self-centring action keeps it in line with the clamp and helps it hang vertically when the rod is level.

As a retort clamp it has a plain rod and needs a boss head on the stand. That makes it adjustable in both height and reach, unlike clamps that fix directly to the upright, and it moves between stands without tools. The title does not state the metal, the jaw opening or whether the jaws are lined; if they are bare, a short piece of rubber tubing over each jaw protects the glass.

For stations that need two burettes, compare the die-cast double burette clamp, which holds a pair from a single fixing.

Specifications

Applications

• Holding a burette for acid-base, redox and precipitation titrations
• Supporting a burette that dispenses a reagent dropwise into a reaction
• Holding a narrow chromatography column or gas drying tube upright

Care & Handling

• Tighten the wing screw until the burette cannot turn when the tap is operated.
• Keep the V-jaws clean, since crystals in the V push the burette off-centre.
• Fit the boss head so the slot holding the rod opens upward.

Why Choose LabEquip

Titration benches in schools and quality-control labs are where retort clamps for burettes are used most, often several per room. LabEquip lists this clamp in its General Lab Products range; contact us with the number of stations you are fitting.

Frequently Asked Questions

Why are the jaws V-shaped?

A V-jaw centres a round tube automatically, since the barrel slides into the middle of the V as the screw is tightened. The burette then sits in line with the clamp instead of off to one side.

What is the difference between a retort clamp and a Fisher type clamp for burettes?

A retort clamp has a plain rod and is fixed to the stand through a boss head. A Fisher type clamp fixes directly to the stand rod with its own screw, so it needs no boss head.

How do I stop the burette turning when I use the tap?

Tighten the wing screw a little more, and operate the tap with your hand wrapped around the barrel, so your fingers take the turning force instead of the clamp.

Why does my burette not hang vertically?

Check that the stand base is level and the clamp rod is horizontal in the boss head. Then check the V-jaws for dirt or crystals, which push the barrel sideways.

Do the jaws need lining?

Bare metal jaws can scratch glass or crush it at a point. If the jaws are unlined, slip a short length of rubber tubing over each one before use.

Can the same clamp hold a test tube?

Yes, if the tube fits within the jaw opening. The V shape centres a test tube in the same way as a burette barrel.

Last Updated: September 2026