Description
2-Neck flask, 500 ml, with centre neck NS 29/32 and straight side neck NS 29/32 is a multi-neck laboratory vessel produced from borosilicate glass 3.3. It features two identical ground joints of size NS 29/32, permitting secure coupling of condensers, addition funnels, stoppers or other standard jointed glassware in distillation, reaction and collection work. The straight side-neck arrangement supports clear multi-port setups frequently required in organic synthesis and larger-scale preparative procedures. Nominal volume is 500 ml; net weight is 0,193 kg, providing ample working capacity for heating mantles and conventional laboratory supports. Borosilicate glass 3.3 supplies the chemical resistance and thermal durability needed for everyday laboratory heating and cooling cycles. Offered by manufacturer Rettberg from Germany, the flask falls within the categories of round-bottom flasks, ground-joint flasks, distillation flasks and receiving flasks. Delivered as a single piece, it is intended for research, teaching and quality-control environments that demand robust two-neck glassware with standardised NS 29/32 joints.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 500 ml
- Material: Borosilicate glass 3.3
- Number of necks: 2
- Joint size: NS 29/32
- Side neck configuration: Straight
- Technical Information Sheet:
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Questions about 2-neck round bottom flask, 500 ml, mn size 29/32, sn size 29/32
What is this article?
2-neck round bottom flask, 500 ml, mn size 29/32, sn size 29/32 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.