Description
Stand clamps 20 - 40 mm are laboratory clamps intended for holding apparatus on stands within a clamping range of 20 to 40 mm. They form part of standard laboratory materials used to secure glassware and other equipment during experimental work on retort stands. The defined opening range supports medium-diameter vessels and fittings commonly encountered in research, teaching and routine analytical setups. Each unit is supplied as 1 pc, allowing straightforward replacement or addition to existing stand assemblies. From manufacturer Hecht, these stand clamps provide a clear size specification so laboratories can match the clamp to the diameter of the item being held. Their role is purely mechanical support: attaching to a vertical stand rod and gripping the load within the stated 20 - 40 mm interval. This makes selection simple when organising benches for distillation, titration or general apparatus mounting. Consistent dimensional labelling helps maintain order across multi-station laboratories and reduces mismatch between clamp and glassware. As basic stand hardware they contribute to stable, adjustable experimental layouts without added complexity.
This article is part of Clamps & bossheads, in Stands, clamps & racks.
Key features
- Pack size: 1 pc
- Product type: Stand clamps
- Clamping range: 20 - 40 mm
- Feature system: UNSPSC-17
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Questions about Clamps 20 - 40 mm
What is this article?
Clamps 20 - 40 mm is the article on this page. Luminix Health distributes Hecht for laboratory use. It sits in Clamps & bossheads, inside Stands, clamps & racks, in Labware.
A bosshead grips the rod. A clamp grips the flask or the condenser, usually through two jaws with cork or vinyl faces. Three-finger and two-finger clamps hold different shapes. The jaw opening is the specification.
A stand, a clamp and a rack hold something still so the hands can do the work. A bosshead locks a clamp to a rod. A test-tube rack keeps tubes upright and in an order the operator can read back. The failure is almost always mechanical: the clamp slips, or the rack does not match the tube diameter. The glass they support is indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stands, clamps & racks. The sub-category is Clamps & bossheads. The catalogue is Labware.
Shelves beside this one are Test tube racks, Stands, rods & bases and Stand & rack accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

