Description
Flat-bottom flask 4000 ml NS 45/40 is a clear laboratory vessel with a nominal volume of 4 l and a standard ground joint NS 45/40. Manufactured from borosilicate glass 3.3, it combines high chemical resistance with good thermal stability for everyday laboratory use. The medium-neck design supports convenient filling, emptying and connection to common glassware adapters. With an outer diameter of 207 mm and a height of 290 mm, the flask rests securely on hotplates, stirrers or benchtops while the clear glass wall allows continuous visual monitoring of contents. This standing flask from manufacturer Witeg is supplied as a single piece and has a net weight of 0,694 kg. It is well suited for preparative chemistry, solvent handling, large-volume mixing, heating under reflux and general storage applications that require a durable flat-bottom borosilicate vessel with a reliable NS 45/40 joint.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 4 l
- Ground joint: NS 45/40
- Neck type: Medium neck
- Material: Borosilicate glass 3.3, clear
- Outer diameter: 207 mm
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Flat bottom flask 4000 ml ST 45/40
What is this article?
Flat bottom flask 4000 ml ST 45/40 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.