Description
Separating funnel, 50 ml, pear-shaped (BF), graduated, with PTFE key NS 12,5/2,5 mm is a precision laboratory vessel designed for liquid-liquid extractions and phase separations. Manufactured from borosilicate glass 3.3, it conforms to ISO 4800 and features clear graduation markings for accurate volume reading. The funnel is fitted with a PTFE stopcock key offering a 12,5/2,5 mm bore for smooth, chemically resistant flow control, together with a PE stopper on the NS 19/26 ground joint. This compact 50 ml model (nominal volume 0,05 l) combines chemical durability with thermal stability typical of borosilicate glass 3.3, making it suitable for routine organic and analytical work. Supplied as a single piece with a net weight of 0,084 kg, the unit is produced by manufacturer Rettberg and is well suited to teaching laboratories, quality-control environments and research settings where reliable phase separation is required. The pear-shaped body promotes efficient settling of layers while the PTFE key ensures leak-free operation and easy cleaning after use with aqueous or organic solvents.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc(s)
- Product type: Separating funnel
- Nominal volume: 50 ml
- Shape: Pear-shaped (BF)
- Material: Borosilicate glass 3.3
- Stopcock: PTFE key NS 12,5/2,5 mm
- Technical Information Sheet:
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Questions about Separatory funnel, 50 ml, conical, grad., PTFE plug size 12,5/2,5 mm,
What is this article?
Separatory funnel, 50 ml, conical, grad., PTFE plug size 12,5/2,5 mm, 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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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.