Description
Glass beads, borosilicate, diameter 3,5–4,0 mm are spherical laboratory packing elements manufactured from borosilicate glass 3.3. Designed for distillation and related process work, they provide chemically resistant, thermally stable spheres that promote even packing density and reliable liquid–vapour interaction in columns and stills. This slightly larger diameter grade suits apparatus geometries that benefit from coarser packing while remaining practical for standard laboratory glassware. Delivered in a 1 kg pack with a net weight of 0,995 kg, the beads support everyday preparative, educational and quality-control tasks. Borosilicate glass 3.3 delivers the inertness and thermal behaviour expected in modern lab glass systems, free from organic binders or coatings. Offered across multiple diameter ranges for flexible matching to equipment, these glass beads from manufacturer ISOLAB Laborgeräte serve distillation trains, boiling-aid roles and general inert packing needs. They fit readily into existing setups and can be cleaned and reused as required. A practical choice for research and industrial laboratories needing durable, consistent borosilicate spheres in bulk format.
This article is part of Grease, boiling stones & sealants, in Tools & accessories.
Key features
- Pack size: 1 kg
- Product type: Glass beads
- Material: Borosilicate glass 3.3
- Diameter: 3,5-4,0 mm
- EAN: 4250362625946
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Questions about glass beads - 3,5 - 4,0 mm diameter
What is this article?
glass beads - 3,5 - 4,0 mm diameter is the article on this page. Luminix Health distributes ISOLAB for laboratory use. It sits in Grease, boiling stones & sealants, inside Tools & accessories, in Labware.
Grease seals a ground joint. Boiling stones give a liquid a place to start boiling so it does not bump. A sealant does the same job as grease when grease would contaminate the product. They are small, and they decide whether a joint weeps.
The small tools of the bench are what the hand actually holds: a spatula for a powder, forceps for an object that must stay clean, a brush for a narrow neck, a desiccator when a dried sample must not take up water again. None of these reads a measurement. They keep the measurement possible. The apparatus around them is listed under ISO laboratory apparatus.
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The category is Tools & accessories. The sub-category is Grease, boiling stones & sealants. The catalogue is Labware.
Shelves beside this one are Spatulas & spoons, Other lab tools & accessories, Lab furniture, trolleys & storage, Tweezers & forceps, Scissors, scalpels & dissecting instruments, Weighing boats, dishes & paper, Desiccators & desiccant, Timers, stopwatches & calculators, Stationery, books & lab notebooks, Brushes & cleaning tools, Stirring rods, spreaders & glass tools, Cutting & sealing tools and Gas handling & burners accessories.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

