Description
Centrifuge tube with round bottom, 45 ml is a robust glass vessel intended for medium-volume sample processing in the laboratory. With an outer diameter of 34 mm and a height of 100 mm, it is fitted with a ground joint sleeve NS 29/22 and a hollow stopper that provides a reliable seal. Constructed from borosilicate glass 3.3, the tube combines chemical durability with resistance to thermal shock, making it suitable for repeated use and cleaning. The round-bottom design promotes effective sedimentation and straightforward recovery of pellets after centrifugation. Offered as a single piece from manufacturer Rettberg, this centrifuge glass supports everyday workflows in research, quality-control and preparative laboratories. Accurate dimensions ensure compatibility with appropriate centrifuge accessories. Optical clarity of the material permits easy observation of phase separation and sample condition during operation. The NS 29/22 joint also allows connection to complementary ground-glass equipment when needed.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 45 ml
- Outer diameter: 34 mm
- Height: 100 mm
- Joint size: NS 29/22
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Centrifuge tube, round bottom, 45 ml, o-Ø 34 mm, height 100 mm, with
What is this article?
Centrifuge tube, round bottom, 45 ml, o-Ø 34 mm, height 100 mm, with is the article on this page. Luminix Health distributes Rettberg 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.