Glass Beakers

What Are Glass Laboratory Beakers?

Glass laboratory beakers are wide-mouth borosilicate vessels with a flat base, pour spout, and volume graduation markings, used for heating liquids on hot plates, mixing reagents, preparing buffers, and performing titrations. Borosilicate glass (ASTM E960, USP Type I) is the standard material for lab-grade glass beakers because its low coefficient of thermal expansion (~3.3×10⁻⁶/K) provides excellent resistance to thermal shock while maintaining chemical inertness against most laboratory acids, bases, and organic solvents. Choose borosilicate glass beakers for high-heat protocols, organic solvent work, and applications where chemical purity and optical clarity are essential.

At MBP, we offer:

• 50mL, 100mL, 250mL, 1000mL, 2000mL, 5000mL, and 10,000mL capacities.

• Shatterproof Polypropylene (PP) or crystal-clear Polymethylpentene (PMP).

• Low-form versatility with easy-pour, non-drip spouts.

• Clear dual-scale markings for rapid and accurate measuring.

• Fully autoclavable at 121°C for sterile lab environments.

• High resistance to most acids, bases, and common solvents.

• Stackable geometry to maximize benchtop and cabinet space.

How to Choose Glass Beakers

Size: Matching Capacity to Workflow

Glass beaker size should be selected according to the volume of solution being prepared or heated. Small 50–100 mL beakers are commonly used for staining procedures, dyes, and small-scale reactions, while 250 mL beakers are suitable for routine buffer preparation and sample digestion. For larger laboratory workflows, 1,000 mL beakers are commonly used for standard media and buffer preparation, while 2,000 mL models provide additional capacity for larger batches and water-bath applications. Laboratories preparing bulk reagents or culture media often use 5,000–10,000 mL beakers. As a general guideline, fill beakers to no more than two-thirds of their nominal capacity during heating to allow for liquid expansion and reduce boil-over risk.

Graduation Type: Molded vs. Printed Dual-Scale

Molded graduations are embossed directly into the glass surface, making them resistant to solvents, cleaning procedures, and repeated autoclaving. Printed dual-scale graduations provide enhanced visibility and may include both metric and imperial measurements for convenience. Laboratories that frequently sterilize glassware often prefer molded graduations because they remain readable throughout the product's service life.

Form Factor

Low-form Griffin-style beakers are the most common laboratory beakers due to their wide, stable base and suitability for magnetic stirring and hot-plate heating. Tall-form Berzelius beakers provide a narrower profile and taller liquid column, making them useful for certain titration procedures, distillation work, and applications where splash reduction is desirable.

Autoclave Compatibility

Borosilicate glass beakers can be safely autoclaved at 121°C and are suitable for dry-heat sterilization up to 500°C. Beakers should never be sealed during autoclaving because thermal expansion of liquids may create pressure buildup. Although borosilicate glass maintains excellent dimensional stability, repeatedly autoclaved beakers should not be relied upon for precision volumetric measurements.

Glass Beaker Size Guide

Small glass beakers ranging from 50–100 mL are typically used for staining procedures, dyes, and small laboratory reactions. Mid-sized 250 mL beakers are commonly selected for buffer preparation and digestion workflows. Standard 1,000 mL beakers are widely used for media and buffer preparation, while 2,000 mL beakers accommodate larger batches and water-bath applications. Large-capacity 5,000–10,000 mL beakers are intended for bulk reagent preparation, media production, and large-scale laboratory processes.

Specifications Context

Borosilicate glass beakers conforming to ASTM E960 provide graduation accuracy of approximately ±5% of total capacity at each marked volume. They withstand direct hot-plate heating, water baths, sand baths, autoclave sterilization at 121°C, and dry-heat sterilization up to 500°C. Borosilicate glass is resistant to most laboratory acids, alkalis, and organic solvents including hydrochloric acid, sulfuric acid, nitric acid, sodium hydroxide, ethanol, acetone, xylene, and chloroform. However, hydrofluoric acid (HF) should never be used with glass beakers because it attacks and dissolves glass surfaces.

Browse Plastic Beakers for shatter-resistant alternatives, Griffin Style Beakers for general-purpose laboratory use, or return to the Laboratory Glassware category. 

Request a quote from the team at MBP to lock in the best performance for your bench.