Description
Test tubes made of soda-lime glass with a round bottom are practical vessels for routine laboratory sample handling and mid-range small-volume work. Each tube provides a 6 ml capacity with dimensions of Ø 12 x H 75 mm, supporting general chemistry, teaching laboratories and everyday analytical tasks. Soda-lime glass offers clear visibility of contents and a cost-effective option for high-consumption workflows. The pack contains 500 pieces from manufacturer Marienfeld, helping laboratories maintain steady stock for multi-user benches and teaching courses. Round-bottom design assists mixing and gentle heating where uniform heat transfer is advantageous. Total pack weight is 2,000 kg, convenient for store rooms and shared laboratory facilities. The 12 mm diameter format is compatible with common racks and holders used for this size class. These consumable glass tubes serve research, quality-control and educational environments that need reliable soda-lime glassware for sample preparation, qualitative tests and routine observation without specialised glass grades.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 500 pc(s)
- Material: Soda-lime glass
- Bottom shape: Round bottom
- Capacity: 6 ml
- Dimensions: Ø 12 x H 75 mm
- Weight: 2,000 kg
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Questions about Test tubes, soda-lime glass, round bottom, 6 ml, Ø 12 x H 75 mm, 500 unit(s)
What is this article?
Test tubes, soda-lime glass, round bottom, 6 ml, Ø 12 x H 75 mm, 500 unit(s) is the article on this page. Luminix Health distributes Marienfeld 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.
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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.