Description
Pouring spout, cone NS 12,5/21, with Keck clip is a laboratory glass adapter designed for controlled pouring from flasks and bottles. Made of borosilicate glass 3.3, it offers chemical resistance and thermal stability for routine laboratory work. The ground joint cone NS 12,5/21 ensures a secure, interchangeable fit with matching sockets, while the accompanying Keck clip locks the connection firmly during liquid transfer. With a net weight of 0,008 kg this compact piece is easy to handle and store. Supplied as 1 pc, the adapter integrates smoothly into existing glassware assemblies. Produced by manufacturer Rettberg, the pouring spout supports organic synthesis, sample preparation and general wet-chemistry workflows where clean, spill-minimised dispensing is required. Its borosilicate glass 3.3 construction maintains clarity and mechanical strength under typical solvent and temperature conditions. The standardised NS joint allows reliable coupling to round-bottom flasks, reagent bottles and other laboratory vessels, making the adapter a practical transition component for everyday liquid-handling tasks.
This article is part of Ground-joint glassware (other), in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Joint size: NS 12,5/21
- Material: Borosilicate glass 3.3
- Product type: Adapter
- Country of origin: Germany
- Technical Information Sheet:
Récemment consulté
Vous aimerez peut-être aussi
Browse related categories
Category
Distillation & extraction glassware
Sub-category
Ground-joint glassware (other)
Catalogue
Brand
Questions about Pouring spout, cone size 12,5/21, with Keck clamp
What is this article?
Pouring spout, cone size 12,5/21, with Keck clamp is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Ground-joint glassware (other), inside Distillation & extraction glassware, in Matériel de laboratoire.
This is ground-joint glassware that is not a head, a condenser or a Soxhlet: receivers, blank joints, odd adapters. A ground joint is named by the wide end and the length, such as 29/32. Mismatched joints do not seal, even with grease.
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 Ground-joint glassware (other). The catalogue is Matériel de laboratoire.
Shelves beside this one are Distillation heads, adapters & columns, Condensers 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.