Laboratory & Chemical
Borosilicate 3.3 distillation flasks with angled side arm, 10 ml to 5 L, for simple and fractional distillation, solvent recovery and purification.
Specification
Product Knowledge
Background, typical uses and selection points for this product. We can send model drawings, technical data and samples to support your evaluation.
Distillation separates and purifies liquids by boiling them and condensing the vapor, and the distillation flask is where the boiling happens. Its angled side arm carries vapor off to a condenser from a set point above the liquid, while a thermometer in the neck reads the vapor temperature.
Round-bottom and pear shapes heat evenly and stand up to the thermal stress of prolonged boiling.
Side-arm distillation flasks are used for simple and fractional distillation, solvent purification and recovery, boiling-point determination and the separation of liquid mixtures, as well as small-scale essential-oil distillation. They are everyday glassware in synthesis and research labs, organic chemistry teaching labs and QC labs that recover or purify solvents in-house. Small 10 ml to 100 ml flasks suit microscale teaching and analytical work, while 1 L to 5 L sizes handle bulk solvent recovery.
Each flask has a round-bottom or pear-shaped borosilicate 3.3 body with an angled vapor side arm. Classic distilling flasks have a plain neck for a stopper and thermometer; jointed versions carry standard-taper ground joints on the neck and side arm to connect thermometer adapters, fractionating columns, condensers and receivers. The even wall and rounded shape spread heat evenly and resist repeated boiling cycles.
Clamp the flask in a stand or mantle, since a round-bottom flask can’t stand on its own. Fill to no more than about two-thirds, add anti-bumping granules and heat gradually. Start the condenser cooling water before heating, and never heat a closed system; the train must be vented. Assemble with matching greased or clipped joints, and let the flask cool before dismantling.
We blow the body and side arm from borosilicate 3.3, fit ground joints where specified and anneal each flask for repeated thermal cycling. Joint sizing, wall evenness and the side-arm angle are checked in production. Options include plain or jointed necks, different joint sizes on neck and arm, side-arm position and length to suit your setup, and flat-bottom versions. Send us your capacity and joint sizes for a quote.
Customization
We specify the container, closure, decoration and transit packing as one package, so every part fits and arrives ready for your filling line.
Choose from standard sizes or request a custom capacity. We supply drawings with tolerances, label panel dimensions and nominal and brimful capacity.
We match caps, liners, pumps, droppers and stoppers to the neck finish and check the seal against your contents and filling process.
Flint, amber and colored glass, with frosting, spray coating, screen printing, hot stamping or labels. Material documentation is available on request.
Partitioned cartons, layer pads or bulk pallets, with shipping marks and pallet patterns planned for your route and warehouse.
Applications
Typical markets and uses. Tell us your contents, filling process and storage conditions and we will recommend the right model and components.
We confirm availability of the standard model, and review any changes to size, color, decoration or tooling for feasibility and lead time.
We send samples and specification sheets so you can check dimensions, component fit and finish before you place the order.
Your quotation covers packing design, shipping route, Incoterms and export documents, so landed cost is clear from the start.
Bulk Quote
Tell us the quantity, specifications and destination. We will reply with pricing, lead time, sample options and technical data for your chosen model.