Description
AR glass test tubes featuring a round bottom and beaded rim measure 180 × 18 mm and provide versatile vessels for laboratory sample storage, reactions and routine analytical procedures. Produced from AR glass, they deliver dependable performance for general laboratory tasks involving aqueous or organic media. Supplied in packs of 100 pieces, the tubes are well suited to research, teaching and quality-control environments. The round-bottom geometry supports uniform heating and mixing, while the beaded rim ensures comfortable handling and secure seating of stoppers. Each pack has a net weight of 2,167 kg and originates from Germany, offered by manufacturer Witeg. These robust glass tubes are compatible with standard laboratory racks and equipment, making them a practical choice for everyday sample preparation and processing workflows.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 100 pc(s)
- Material: AR glass
- Bottom shape: Round
- Rim: Beaded
- Dimensions: 180 x 18 mm
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Questions about Test tubes AR-glass
What is this article?
Test tubes AR-glass is the article on this page. Luminix Health distributes Witeg 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.