Materials: Borosilicate Glass
Reaction Flask, Round Bottom with Flat Flange Joint, BORO 3.3 Glass
- Round bottom reaction flask made from BORO 3.3 glass
- Wide neck design with large flat flange joint
- Suitable for reaction, mixing, preparation and process development workflows
- Large flange opening allows easier vessel access and cleaning
- Useful for adding and removing solids or resinous materials
- Compatible lids can be detached easily during setup and cleaning
- Large stirrers can be accommodated with suitable lids and fittings
- Flasks and lids using the same flange size are interchangeable
- Available capacities range from 250 mL to 20,000 mL
- Available flange bore sizes include 75 mm and 100 mm
- Suitable for laboratory, research and pilot plant applications
- Confirm lid, clamp, seal, stirrer and heating compatibility before use
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- Description
Description
The Reaction Flask, Round Bottom with Flat Flange Joint, BORO 3.3 Glass, also known as a wide neck borosilicate reaction vessel, is designed for laboratory reaction, mixing, preparation and process development workflows. These round bottom reaction flasks are manufactured from BORO 3.3 glass and fitted with large diameter flat flange joints, providing practical access to the vessel interior during setup, cleaning and material handling. The wide neck flat flange design offers several advantages over conventional conical jointed flasks, including easier lid removal, improved cleaning access and easier addition or removal of solids and resinous materials.
The large flange opening can accommodate suitable stirrers, probes, condensers, addition funnels or other compatible accessories when used with the correct flange lid and fittings. Flasks and lids using the same flange size are fully interchangeable, supporting flexible laboratory setup across compatible reaction systems. The range includes nominal capacities from 250 mL through to 20,000 mL, supporting small laboratory reactions through larger preparation and pilot plant scale work. These flasks are suitable for chemistry laboratories, research facilities, university teaching laboratories, synthesis workflows, sample preparation areas, process development laboratories and pilot plant workflows.
Users should confirm the correct nominal capacity, flange bore size, lid type, clamp, seal, support setup, stirrer clearance and heating method before ordering or use. Glass reaction vessels should be handled carefully. Avoid sudden temperature changes, uneven heating, mechanical shock, incorrect clamping or unsupported vessel loading. Pressure, vacuum, heating and chemical compatibility should be confirmed against the complete reaction setup and approved laboratory method before use. This item is supplied as the selected round bottom reaction flask with flat flange joint only. Lids, flange clamps, O-rings, gaskets, stirrers, heating mantles, stands, condensers, probes and additional reaction accessories are not included unless specified separately.
LabChoice Australia supplies Round Bottom Reaction Flasks with Flat Flange Joints in BORO 3.3 glass for chemistry laboratories, research facilities, universities and process development environments requiring practical wide neck glass reaction vessels.
| SKU Number | Nom. Cap. ml | Flange bore mm | Overall height mm |
|---|---|---|---|
| LC-03-RFRB921 | 250 | 75 | 90 |
| LC-03-RFRB922 | 500 | 75 | 115 |
| LC-03-RFRB923 | 700 | 100 | 135 |
| LC-03-RFRB924 | 1000 | 100 | 155 |
| LC-03-RFRB925 | 2000 | 100 | 185 |
| LC-03-RFRB926 | 3000 | 100 | 210 |
| LC-03-RFRB927 | 5000 | 100 | 245 |
| LC-03-RFRB928 | 6000 | 100 | 260 |
| LC-03-RFRB929 | 10000 | 100 | 320 |
| LC-03-RFRB930 | 20000 | 100 | 400 |
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What Our Customers Say
⭐⭐⭐⭐⭐
We ordered a set of customised BORO 3.3 borosilicate glassware for our teaching labs, and LabChoice Australia exceeded every expectation. From the first consultation to final delivery, their team listened carefully, offered expert advice, and ensured every piece matched our specifications perfectly.
The clarity and precision of the glassware are exceptional, and the quick turnaround made setup effortless. It’s refreshing to work with an Australian supplier who genuinely understands laboratory needs and takes pride in quality craftsmanship. We’ll definitely be returning to LabChoice for future glassware requirements
⭐⭐⭐⭐⭐
Our lab required high-precision BORO 3.3 glassware for analytical testing, and LabChoice Australia delivered outstanding results. The ordering process was simple, communication was clear, and every beaker and flask arrived perfectly calibrated and ready for use.
The quality of the glass is exceptional — resistant to heat, easy to clean, and consistently accurate in measurement. It’s reassuring to know there’s an Australian supplier that combines scientific precision with genuine customer care. I’d recommend LabChoice to any research team looking for dependable labware
⭐⭐⭐⭐⭐
We needed a set of customised borosilicate glassware for a specialised project, and LabChoice Australia delivered exactly what we envisioned. The team worked closely with us from design to production, ensuring every detail met our specifications. The craftsmanship is exceptional, and the turnaround time was impressive. It’s reassuring to know we can rely on them for unique, made-to-order pieces
⭐⭐⭐⭐⭐
LabChoice Australia has completely changed the way we source our lab glassware. The quality is consistently top-notch, and every piece meets the precision we need for reliable results. Their team knows their stuff, answers our questions quickly, and always goes the extra mile to help — they’re more like partners than just a supplier.
⭐⭐⭐⭐⭐
We trust LabChoice Australia because they deliver every time. Their borosilicate glassware is durable, accurate, and perfect for the high-heat work we do. Everything arrives well-packed with clear specs, so there are never surprises. It’s reassuring to deal with a supplier who understands both compliance and the demands of a busy lab