Burette Clamp, Rotatable 2

Quick Answer: The Burette Clamp, Rotatable 2 is a swivel burette clamp: long blue coated arms end in cork-lined jaws, and a swivel at the back lets the grip be turned and locked at the angle a set-up needs. In the listing image a T-screw across the arms closes the jaws.

The Rotatable 2 in Practice

The Burette Clamp, Rotatable 2 suits benches whose set-ups change between lessons. With the swivel loosened, the jaws can be turned to hold a burette upright, then later set to a slant for a delivery tube or a sloping condenser. Only the swivel moves; the boss head and stand stay where they are.

The photograph shows long arms with cork pads on the inner faces of both jaws, and a T-screw bridging the arms. Long arms give a wide opening, which helps with thicker items such as condenser jackets or the neck of a larger flask. Compared with the Rotatable 1, pictured with a compact grey body, number 2 appears built for a wider grip, but the title states no jaw range, so check it against your glassware.

A T-screw can be turned with more force than a small thumbscrew. That helps with heavier items but makes it easy to overtighten on thin glass; close it only until the item stops slipping.

Applications

• Holding an Allihn condenser upright over a flask for reflux
• Setting a side-arm boiling tube at a slant for gas generation
• Burette support at a titration station that is also used for other practicals
• Holding a larger flask neck where a small burette clamp will not open wide enough

Specifications

Care & Handling

• After locking the swivel, give the swivel burette clamp a light push to confirm it cannot rotate under load.
• Leave a little slack when clamping glass that will be warmed, so it can expand.
• Wipe the blue coating after acid spills to keep the metal beneath from corroding.

Why Choose LabEquip

Colleges and schools that equip one set of stands for both chemistry and physics practicals tend to buy wide-opening swivel clamps, because they cover the most jobs. LabEquip lists the Rotatable 2 in its General Lab Products range; contact us for class quantities.

Frequently Asked Questions

How is the Rotatable 2 locked at an angle?

Loosen the swivel screw, turn the jaws to the required angle and tighten the screw again. Test the joint with a light push before putting weight on it.

Is cork suitable for warm glassware?

Cork tolerates warm glass better than many plastic coatings, which is why it is common on condenser and flask clamps. It still chars in a flame, so keep the jaws out of direct heat.

Why are the arms longer on this pattern?

Longer arms open wider, so the clamp can take thicker items such as condenser jackets and flask necks. They also give more leverage on the T-screw, so tighten with care on thin glass.

Can a swivel burette clamp hold a condenser for reflux?

Yes. For reflux the condenser stands vertically above the flask, so the swivel is set upright and the jaws close around the condenser jacket, not the joint.

What happens if the swivel slips during use?

The held item rotates downward, which can break glass or spill its contents. Always test the lock before loading, and support a flask with its own clamp rather than relying on one swivel.

Which is more suitable for burettes, Rotatable 1 or 2?

Either holds a burette upright. Number 2, with its longer arms as pictured, also covers thicker items, while number 1 is the more compact choice when stands are crowded.

Last Updated: September 2026