For precise liquid handling, safe heating, and reliable storage, a 100 ml Erlenmeyer flask is a staple in many laboratories. This guide highlights five well-regarded options, focusing on borosilicate glass, durability, and clear graduations. Each entry includes a quick overview, key features, and practical notes to help researchers, students, and hobbyists choose the right flask for their needs.
| Product | Brand | Capacity | Highlights |
|---|---|---|---|
| 100ml Narrow Mouth Erlenmeyer Flask | Karter Scientific | 100 ml | 2-pack, 20/40/100 ml graduations, compact height |
| EISCO 12PK Erlenmeyer Flasks, 100 mL | EISCO | 100 ml each | Pack of 12, heavy-duty borosilicate 3.3, autoclavable |
| EISCO Erlenmeyer Flask, 100 mL | EISCO | 100 ml | Narrow neck, durable borosilicate 3.3, durable design |
| Okulab Conical Flask Set, 100 mL | Okulab | 100 ml | Set of 6, printed graduation, borosilicate glass |
| PATIKIL Erlenmeyer Flask, 100 ml | PATIKIL | 100 ml | 3-pack, narrow mouth, clear scale, borosilicate glass |
The following sections provide a closer look at each option, including build quality, usability, and the kinds of experiments they suit best. Consider your need for sets versus single flasks, whether autoclavability is essential, and how important readability of graduations is for your work.
Karter Scientific 100ml Narrow Mouth Flasks

Capacity is 100 ml with graduations at 20 ml increments from 40 ml to 100 ml, aiding quick volume checks during experiments. The flasks are made of 3.3 borosilicate glass, offering good chemical resistance and temperature tolerance. The narrow mouth design helps minimize evaporation and splashing during shaking or swirling. This is a practical pick for classrooms and teaching labs that need a reliable two-pack option for paired experiments or student groups.
EISCO 12-Pack 100 mL Erlenmeyer Flasks

These flasks come in a bulk pack of 12, each with a 100 mL capacity and white enamel graduations every 25 mL. They’re constructed from borosilicate 3.3 glass for enhanced strength, thermal tolerance, and chemical durability. The uniform wall thickness and reinforced rim offer improved durability under heating and handling. A strong choice for laboratories that require multiple flasks for large classes, demonstrations, or routine experiments.
EISCO Erlenmeyer Flask, 100 mL (Single)

This single 100 mL Erlenmeyer from EISCO emphasizes reliability with a narrow neck and 3.3 borosilicate glass. Graduations are clearly marked in white enamel, designed for quick measurements during experiments. It’s microwavable and autoclavable, making it suitable for repeated heating cycles and sterilization in educational labs and research settings. The combination of durability and readability supports a wide range of chemistry demonstrations and experiments.
Okulab Conical Flask Set, 100 mL

The Okulab set includes six 100 mL borosilicate glass Erlenmeyer flasks, each featuring printed graduations for precise measurements. The glass is 3.3 borosilicate, known for chemical resistance and durability. The compact 100 mL size supports small-scale reactions, titrations, and teaching demonstrations. A practical choice for classrooms and lab benches where several flasks are needed without sacrificing readability or reliability.
PATIKIL Erlenmeyer Flask Set, 3 x 100 mL

This set of three flasks emphasizes a narrow mouth and clear graduated markings, useful for accurate measuring, mixing, and short-term storage in experiments. Made from high borosilicate glass, the flasks are designed for high temperature resistance and chemical stability. The presentation highlights the importance of readability and handling ease in busy lab environments or educational settings where multiple flasks are needed for small group work.
Buying Guide
Key considerations when selecting a 100 mL Erlenmeyer flask include material quality, mouth design, and graduation readability. Borosilicate 3.3 glass is the standard for chemical resistance and thermal stability; ensure the product explicitly lists this grade. Narrow-mouth designs help minimize evaporation and accidental spills, especially during swirling or heating. Readability matters when precise measurements are critical—look for white enamel graduations, clearly marked intervals, and a stable base to reduce tipping. Consider whether you need a single flask or a bulk set for classes, demonstrations, or busy labs.
Other purchase factors include autoclavability and microwavability if you require repeat sterilization or rapid heating. Durability features such as reinforced rims and uniform wall thickness can extend the life of flasks used in everyday experiments. For teaching environments, sets with multiple flasks offer practical value, while individual flasks may suit specialized tasks or limited bench space. Always verify that the joint sizes, if applicable, match any stoppers or connectors you plan to use in more complex setups.
In summary, the best 100 mL Erlenmeyer flasks balance reliability, readability, and durability. For classrooms and research labs that need flexibility, bundles from EISCO and Okulab provide strong, economical options. For focused applications requiring high-volume sets, the 12-pack from EISCO is a solid, cost-effective choice. Individual flasks from Karter Scientific and PATIKIL offer dependable performance in compact formats, with clear graduations to support precise measurements.