Flat Bottom Flask 250ml

The Flat Bottom Flask 250ml is a laboratory vessel used for holding, mixing, preparing and handling compatible liquids during chemistry and general laboratory procedures. Its 250 mL nominal capacity and flat-bottom form make it suitable for school, college, research and analytical laboratories where a flask that can stand on a level surface is required.

Product Description

The STEMAids Flat Bottom Flask 250ml combines a laboratory flask body with a flat base that allows the vessel to stand upright on a suitable level surface. The flask can support routine liquid preparation, mixing, temporary containment and experimental procedures appropriate to its verified material and construction.

The nominal capacity is 250 mL. The exact glass composition, neck configuration, rim or joint design, wall thickness, dimensions and thermal limits are . These specifications should be verified before describing the flask as borosilicate, heat-resistant or suitable for direct heating. Explore related STEMAids laboratory glassware.

Key Features

• 250 mL nominal capacity: Provides a practical size for small-scale laboratory preparations and experiments.
• Flat-bottom design: Allows the flask to stand on a stable, level laboratory surface.
• General laboratory utility: Suitable for holding, mixing and preparing compatible liquids.
• Reusable format: Can be cleaned and reused when permitted by its material and the laboratory procedure.
• Educational value: Suitable for supervised chemistry demonstrations and practical laboratory work.
• Convenient handling: The flask form supports routine transfer, swirling and temporary containment of liquids.
• Material specification: Exact glass grade and thermal performance are and should not be assumed.

Technical Specifications

What’s Included in the Kit

• Flat Bottom Flask 250ml 
• Stopper or closure 
• Protective product packaging

Applications / Uses

• Holding compatible laboratory liquids and solutions.
• Preparing and mixing small laboratory batches.
• Supporting chemistry reactions and demonstrations appropriate to the flask specification.
• Temporary containment of samples or prepared liquids.
• Teaching common laboratory glassware handling techniques.
• Routine chemistry and research laboratory workflows.

For complementary apparatus, browse STEMAids chemistry laboratory equipment and the complete lab glassware collection.

How to Use the Flat Bottom Flask 250ml

1. Inspect the flask for cracks, chips or contamination before use.
2. Place it on a clean, stable and level laboratory surface.
3. Confirm that the flask material is compatible with the substance being handled.
4. Add the required liquid using suitable laboratory transfer equipment.
5. Mix by controlled swirling or another method specified in the laboratory procedure.
6. Use appropriate support or clamping if the experimental setup requires it.
7. Empty and clean the flask according to the substances handled after use.

Safety note: Never use cracked or chipped laboratory glassware. Do not directly heat the flask unless its material, construction and permitted heating conditions have been confirmed by STEMAids.

Care & Maintenance

• Clean the flask promptly using a method compatible with its material and previous contents.
• Avoid sudden temperature changes unless the product’s thermal resistance has been verified.
• Inspect the base, neck and rim regularly for chips or stress damage.
• Store clean and dry in a protected laboratory cabinet or suitable glassware area.

Why Choose STEMAids

STEMAids is the STEM education brand of Eduscope Smart Learning Solutions Private Limited, a New Delhi-based manufacturer whose registered production activities include laboratory glassware. The company publishes ISO 9001:2015 quality-management credentials and maintains an active Importer-Exporter Code for export supply. STEMAids supports schools, colleges, laboratories and institutional procurement projects. Company-level certifications do not establish product-specific ISO conformity or thermal performance for this flask unless separately documented.

Frequently Asked Questions

What is a Flat Bottom Flask 250ml used for?

A Flat Bottom Flask 250ml is used for holding, mixing, preparing and handling compatible liquids during chemistry and general laboratory procedures.

What is the capacity of this flat bottom flask?

The STEMAids Flat Bottom Flask has a nominal capacity of 250 mL.

Why does a laboratory flask have a flat bottom?

A flat bottom enables the flask to stand upright on a stable, level surface without requiring a flask ring for routine placement.

What material is the STEMAids 250 mL flask made from?

The exact material is . Borosilicate glass or another specific glass composition should not be claimed until verified by STEMAids.

Can the Flat Bottom Flask 250ml be heated?

Heating compatibility is . Do not place the flask over a flame, hot plate or other heat source until its glass type and permitted heating conditions are verified.