Description
Aluminium reducing insert for 25 ml round-bottom flask is a laboratory heating-block accessory that adapts larger block formats to smaller vessel volumes. The insert is designed for a 25 ml round-bottom flask and fits StarFish MonoBlock and PolyBlock 250 ml systems, allowing laboratories to run small-scale reactions without exchanging the entire block. Made from aluminium, it is chemical-resistant and can be heated up to 260 °C, supporting controlled heating in synthesis, sample preparation and related workflows. Efficient thermal contact between the aluminium body and the flask wall helps maintain stable process temperatures within the stated limit. Offered as a single piece with a net weight of 0,148 kg from manufacturer Heidolph, the insert integrates cleanly into existing StarFish setups where modular flask sizing is required. Its compact reducing geometry keeps the 25 ml flask securely seated during heating, while chemical resistance supports durability with common laboratory reagents. This accessory is intended for research and routine laboratories that rely on modular heating platforms and need a practical path from 250 ml block capacity down to 25 ml flask work.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Material: Aluminium
- Flask volume: 25 ml
- Compatibility: StarFish MonoBlock and PolyBlock 250 ml
- Maximum temperature: 260 °C
- EAN: 4255661401796
- Technical Information Sheet:
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Questions about 25 ml flask insert
What is this article?
25 ml flask insert is the article on this page. Luminix Health distributes Heidolph for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labware.
A round-bottom flask is the heating flask of a distillation or a reflux. The curved wall takes the heat, and the ground neck connects to a still head or a condenser. The joint size, not only the volume, has to match the rest of the set.
A beaker is an open working vessel: easy to pour, poor as a measure. An Erlenmeyer flask has a flat base and a conical wall so a liquid can be swirled without climbing out. A round-bottom flask is for heating under a condenser, because the heat meets a curved wall and the joint at the neck connects to the rest of the glassware. Borosilicate is the glass that survives the temperature change. These forms are listed under ISO laboratory glassware.
Which category should I open next?
The category is Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Labware.
Shelves beside this one are Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, Flat-bottom flasks, Flasks (other) and Beaker & flask 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.