Description
Distillation reflux divider, manually controlled is a precision laboratory glassware component fabricated from borosilicate glass 3.3 for use in distillation assemblies. It features a sleeve NS 29/32 for connection to a reflux condenser, a cone NS 29/32 for attachment to a distillation column, and a sleeve NS 14,5/23 intended for a ground-joint thermometer or similar accessory. A lateral adjustable PTFE valve enables precise reflux ratio setting and incorporates a cone NS 14,5/23 for the receiving flask. The unit is supplied as one piece with a net weight of 0,149 kg and is manufactured in Germany. This manually regulated reflux divider from manufacturer Rettberg supports controlled separation processes in organic synthesis and purification work. Its standardised ground-joint interfaces ensure compatibility with common laboratory distillation columns and condensers, while the durable borosilicate construction withstands typical thermal and chemical conditions encountered during reflux operations.
This article is part of Condensers, in Distillation & extraction glassware.
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Questions about Distillation-reflux divider, hand regulated
What is this article?
Distillation-reflux divider, hand regulated is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Condensers, inside Distillation & extraction glassware, in Labware.
A condenser turns vapour back to liquid. A Liebig is a straight jacket. A coil packs more surface into a short height. A cold finger cools from the inside. The water connections and the joint size are the practical specification, together with the cooled length.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Condensers. The catalogue is Labware.
Shelves beside this one are Distillation heads, adapters & columns, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
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.

