Description
Round-bottom flask 250 ml NS 29/32 short neck Economy is a clear borosilicate glass 3.3 flask designed for distillation, collection and general laboratory heating work. The short-neck configuration with a neck length of 15 mm and standard ground joint NS 29/32 keeps the assembly compact while remaining compatible with common condensers and adapters. A nominal volume of 250 ml suits everyday reaction and recovery volumes, and the round-bottom profile supports uniform heat transfer. Manufactured as clear glass by Witeg, this Economy variant is supplied in packs of 10 pieces with a net weight of 0,108 kg per flask. Borosilicate glass 3.3 provides the chemical resistance and thermal performance expected in organic synthesis, solvent work-up and sample preparation. The short-neck design is practical where reduced headspace or lower overall height is preferred on crowded benches, heating mantles or rotary evaporators, offering a straightforward glassware option for teaching, research and routine process laboratories.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Nominal volume: 250 ml
- Joint size: NS 29/32
- Neck type: Short neck
- Neck length: 15 mm
- Material: Borosilicate glass 3.3
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Round bottom flask 250 ml ST 29/32 short neck
What is this article?
Round bottom flask 250 ml ST 29/32 short neck 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.