Hoffman Clips (Product Code: SLE/CH/212) are screw-adjusted tubing clamps used to squeeze rubber or flexible tubing so that the flow of liquid or gas through it can be reduced gradually or stopped completely. These clips are nickel-plated brass, with a projecting plate that stops the end of the screw from damaging the tubing and a hinged bottom bar that lets you fit or remove the clip without reaching an end of the tube. They are made by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, a chemistry lab instruments supplier and manufacturer.
| Parameter | Detail |
|---|---|
| Material | Brass |
| Finish | Nickel coated (nickel-plated) |
| Tubing protection | Projecting plate prevents damage to tubing by the end of the screw |
| Fitting | Hinged bottom bar for direct fitting and removal without access to the ends of the tube |
| Pack size | Pack of 10 |
Swing the hinged bar open, slip the clip over the tubing at the point you want to control, close the bar, and turn the screw to press the tubing flat. A few turns give fine control of the drip rate from an aspirator or reservoir, while fully tightening the screw seals the line so a gas generator or siphon can be left standing. Because the clip opens from the side, it can be added to tubing that is already connected at both ends, for example between a Kipp generator in a lab and its delivery tube, without dismantling the apparatus.
Release the screw after use so the tubing does not take a permanent set, and inspect rubber tubing regularly for cracks where the clip presses. The nickel-plated finish helps the brass resist tarnish in a chemistry lab; wipe clips dry after contact with liquids and store them together in a drawer, where a pack of 10 keeps enough on hand for several setups.
Hoffman Clips are produced by Jain Scientific Equipments Private Limited, the Ambala, Haryana manufacturer that sells under the ScienceLab name to schools, colleges, laboratories and trade partners. For company details, see our profile page.
Tubing and alternative clamps that are used with Hoffman clips:
Browse the full Chemistry Lab Equipment range.
How many clips are in a pack?
Each pack contains 10 Hoffman clips.
What are the clips made of?
They are brass with a nickel-coated finish.
Can I fit a clip without disconnecting the tubing?
Yes. The hinged bottom bar opens so the clip can be placed on or taken off the tube without access to either end.
Will the screw cut into the tubing?
No. A projecting plate sits between the screw end and the tube, spreading the pressure and preventing damage to the tubing.
What tubing sizes does it fit?
The maximum tubing diameter is not listed. Send us your tubing outside diameter through our contact page and we will confirm the fit.
What should a school include in a quotation request?
The product code SLE/CH/212, number of packs, delivery address and any tender reference; we quote for buyers in India and international markets.
Send an enquiry for Hoffman Clips through our contact page, or add them to the enquiry cart together with tubing.
Last updated: 24 September 2026