Description
Flat-bottom flask with standard ground joint NS 14/23, without stopper, is a laboratory standing flask made from Boro 3.3 with white inscription and conforming to DIN EN ISO 4797. The vessel offers a nominal volume of 50 ml and is equipped with a sleeve ground joint of size NS 14/23. It is supplied without a stopper, leaving the joint free for use with matching stoppers or direct connection to other standard ground-joint glassware. The flat-bottom geometry allows the flask to stand stably on the laboratory bench during preparation, heating or temporary holding of liquids. White inscription supports clear visual identification in everyday laboratory organisation. Boro 3.3 is the established glass type specified for this flask series. Manufactured to the requirements of DIN EN ISO 4797, the item provides consistent joint and body dimensions for routine assembly work. Packs of 10 pieces from manufacturer Hecht facilitate efficient replenishment of common joint sizes. This 50 ml flat-bottom flask with NS 14/23 joint is intended for general laboratory procedures that require a standing flask with a precision ground joint and durable white marking.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Material: Boro 3.3
- Volume: 50 ml
- Ground joint: NS 14/23
- Configuration: Without stopper
- Inscription: White
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Flasks, boiling, flat bottom with socket, Boro 3.3, DIN EN ISO 4797, printing
What is this article?
Flasks, boiling, flat bottom with socket, Boro 3.3, DIN EN ISO 4797, printing is the article on this page. Luminix Health distributes Hecht 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.

