Laboratory & Chemical
Conical borosilicate 3.3 Erlenmeyer flasks, 25 ml to 5 L, for heating, mixing, titration and shake-flask culture in teaching, QC and research labs.
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.
Designed by chemist Emil Erlenmeyer in 1860, the conical flat-bottomed flask is found in practically every lab. Its shape is functional: contents can be swirled hard to mix or dissolve without splashing out, the narrow opening limits evaporation and is easy to plug, and the flat base sits steadily on a hotplate.
In borosilicate 3.3 the flask tolerates heating and thermal shock, so it covers everything from boiling and recrystallization to microbial shake-flask culture.
Erlenmeyer flasks are used for heating and boiling, mixing and titration, recrystallization and general sample preparation, and as shake flasks for microbial and cell cultures. Teaching labs buy them in volume for student sets, while QC, analytical and research labs use them daily as working vessels. Wide-neck, baffled and ground-joint versions extend the same shape to culture work and to assemblies with condensers and adapters.
Each flask has a conical borosilicate 3.3 body, a flat base and a narrow neck finished with a reinforced beaded rim, a ground-glass joint or a screw thread, depending on use. An enamel scale and marking spot help with rough volume estimates and labeling; the scale is approximate, so the flask is not a measuring vessel. The neck takes a cotton plug, rubber or silicone bung, glass stopper or cap.
Borosilicate handles direct heating, but heat gradually and evenly on a hotplate or over a wire gauze to avoid hot spots, and never heat a closed flask. Check for star cracks or chips before heating, since a flawed flask can fail under thermal stress. For accurate volumes, measure in a graduated cylinder or volumetric flask and transfer. For culture work, autoclave with a loose closure so steam can circulate.
We form the flasks from borosilicate 3.3, anneal them to relieve stress for repeated heating and cooling, and screen-print and fire the enamel scale. Wall evenness and rim strength are checked in production. Options include narrow- or wide-neck versions, standard ground-joint sizes, screw-neck culture flasks, custom printed logos and scales, and packing in counts for teaching-lab supply. Samples across your size range are available before a bulk order.
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.