Description
Separating funnel 50 ml pear-shaped (BF), graduated, with solid glass key NS 12,5/2,5 mm bore is a precision laboratory vessel designed for liquid–liquid extractions and phase separations. Manufactured from borosilicate glass 3.3 in accordance with ISO 4800, it offers excellent chemical resistance and thermal stability for routine analytical and preparative work. The pear-shaped body ensures efficient phase collection, while clear graduation markings support accurate volume control. A PE stopper with ground joint NS 19/26 provides a secure, leak-resistant closure during shaking and settling. The solid glass stopcock with 2,5 mm bore allows controlled draining of the lower phase. This model from manufacturer Rettberg is supplied as a single unit and is well suited for organic synthesis, solvent extraction, and general wet-chemistry applications where reliable phase separation is essential. Its compact 50 ml nominal volume makes it ideal for small-scale procedures and teaching laboratories requiring durable, standardised glassware.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 50 ml
- Shape: Pear-shaped (BF), graduated
- Stopcock: Solid glass key NS 12,5/2,5 mm bore
- Stopper: PE stopper NS 19/26
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
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Questions about Separatory funnel, 50 ml, conical, grad., glass plug size 12,5/2,5 mm,
What is this article?
Separatory funnel, 50 ml, conical, grad., glass plug size 12,5/2,5 mm, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Ballons à fond rond, inside Béchers & fioles, in Matériel de laboratoire.
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 Béchers & fioles. The sub-category is Ballons à fond rond. The catalogue is Matériel de laboratoire.
Shelves beside this one are Béchers, Fioles Erlenmeyer, Récipients de réaction & récipients à double enveloppe, Fioles à fond plat, Fioles (autres) and Accessoires pour béchers & fioles.
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.