Description
Test tubes, soda-lime glass with round bottom provide a 20 ml working volume and measure Ø 16 x H 130 mm for everyday laboratory sample work. Constructed from clear soda-lime glass, they are suited to general handling, mixing and visual inspection of liquids and suspensions in analytical and routine workflows. The round-bottom geometry together with the 16 mm diameter and 130 mm height fits standard laboratory racks and common bench setups. Packaged as 100 pc(s) with a weight of 1,300 kg, the set offers a convenient quantity for regular laboratory replenishment. These tubes from manufacturer Marienfeld form part of the laboratory glassware assortment for test tubes and sample tubes. Transparent soda-lime glass supports clear observation of contents throughout typical procedures. The defined 20 ml capacity and elongated profile address needs where slightly larger sample volumes are required while remaining easy to handle. Consistent dimensions and multi-piece packaging help laboratories maintain uniform glassware stocks for research, control and educational environments.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 100 pc(s)
- Material: soda-lime glass
- Bottom type: round bottom
- Capacity: 20 ml
- Dimensions: Ø 16 x H 130 mm
- Weight: 1,300 kg
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Questions about Test tubes, soda-lime glass, round bottom, 20 ml, Ø 16 x H 130 mm, 100 unit(s)
What is this article?
Test tubes, soda-lime glass, round bottom, 20 ml, Ø 16 x H 130 mm, 100 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?
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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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.