Guardian 5000 container Clamp

Quick Answer: The Guardian 5000 Container Clamp is a rod-mounted clamp with a metal V-block and a length of chain that holds a beaker, bottle or flask firmly in place on a Guardian 5000 hotplate or stirrer. It stops the container from sliding or tipping while the stir bar runs or while a heavy vessel is being heated.

Specifications

How the Chain and V-Block Grip a Container

The listing photograph shows a short metal rod leading to a V-shaped block, with a long chain of fine metal links hanging from it. The container is pressed into the V, the chain is passed around its far side and hooked back, and tension in the chain pulls the vessel snugly into the two faces of the V. Because a V-block centres any round object, the same clamp holds a narrow bottle or a wide beaker equally well; the chain is simply taken up to the right length.

This matters most with tall or heavy vessels. A tall media bottle or a large beaker on a stirrer can “walk” across the plate when the stir bar runs off-centre, and a partly filled flask can tip when a probe or tube is pushed in. Holding the vessel against a fixed point removes that risk without covering the top of the container.

The container clamp mounts on the upright rod of the Guardian clamp system and is one of three clamp types in the range, alongside the column clamp and the special nester clamp for awkward glassware.

Typical Uses

• Keeping a tall media bottle upright while it is stirred for a long time
• Holding a large beaker steady during heating and stirring of a viscous solution
• Stopping a conical flask from moving when a pH electrode or probe is inserted
• Securing a vessel on a stirrer during a titration with a burette overhead

Care & Handling

• Tension the chain enough to hold the vessel, but not so hard that thin glass is stressed
• Keep the chain clear of the hot top plate so it does not heat up and mark the glass
• Release the chain before lifting a heated vessel
• Wipe spills off the chain links, which trap liquid and corrode more readily

Why Choose LabEquip

The Guardian 5000 container clamp is popular with labs that stir tall bottles or heavy vessels on their Guardian units. LabEquip can supply it with the rod and other clamps from our general lab products range; contact us with the vessel sizes you use.

Frequently Asked Questions

How does the Guardian 5000 container clamp hold a vessel?

The vessel is pressed into a V-shaped block and a chain is wrapped around it and hooked back. The chain tension pulls the vessel into the V and holds it steady.

Which container sizes can it hold?

The V-block centres round vessels of many diameters, and the chain length sets the upper limit. Ask us for the largest diameter when you enquire if you use very wide vessels.

Why would a container move on a stirrer?

A stir bar running off-centre, or a heavy, tall vessel, can make the container creep across the plate. A clamp holds it in place during long runs.

Can the clamp be used on a hot vessel?

Yes, it is designed for use on a hotplate. Keep the chain away from the heated surface and release it with gloves after heating.

Is the chain safe for glass beakers?

Yes, when tensioned moderately. The pull spreads over the chain links and the two faces of the V. Very tight tension on thin glass should be avoided.

What does the clamp mount on?

It mounts on the upright rod of the Guardian 5000 clamp system, which is sold separately in this range.

Last Updated: September 2026