Description
Borosilicate 3.3 Glass Beakers are the quintessential laboratory vessel, engineered for superior thermal and chemical resistance. Often referred to as “Griffin Beakers,” these low-form containers feature a wide cylindrical body and a pouring spout, making them ideal for stirring, mixing, and heating liquids.
Core Material Properties (Boro 3.3)
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Thermal Shock Resistance: Designed with a low coefficient of linear expansion ($\approx 3.3 \times 10^{-6} K^{-1}$), allowing the glass to withstand rapid temperature changes without cracking.
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Chemical Durability: Highly resistant to water, neutral and acid solutions, concentrated acids, and organic solvents. It also offers excellent resistance to alkaline erosion.
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High Temperature Limit: Suitable for continuous heating. It can withstand temperatures up to 500°C for short durations (though extreme caution is required for rapid cooling).
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Optical Clarity: Transparent, bubble-free glass ensures clear visibility for monitoring reactions and volume levels.
Key Product Features
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Uniform Wall Thickness: Ensures even heat distribution, which is critical for direct flame or hotplate heating.
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Reinforced Rim: Features a beaded rim to prevent chipping and increase mechanical strength during handling.
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Integrated Spout: Precision-molded spout allows for clean, drip-free pouring of liquids.
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Graduated Scale: Features high-contrast, permanent white enamel markings for approximate volume measurement (typically accurate within ±5%).
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Marking Spot: Includes a large, matte-finish white area for labeling samples with a pencil or marker.
Technical Specifications & Sizing
| Capacity (ml) | Outer Diameter (mm) | Height (mm) | Typical Graduation Range (ml) |
| 50 | 42 | 60 | 10–40 |
| 100 | 50 | 70 | 20–80 |
| 250 | 70 | 95 | 50–200 |
| 500 | 85 | 120 | 100–400 |
| 1000 (1L) | 105 | 145 | 200–800 |
| 2000 (2L) | 130 | 185 | 400–1600 |
| 5000 (5L) | 170 | 270 | 1000–4000 |
Common Applications
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Heating & Evaporation: Used over Bunsen burners (with wire gauze) or hotplates to boil liquids or concentrate solutions.
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Titration & Stirring: The wide mouth allows for easy access by magnetic stir bars or glass stirring rods.
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Reagent Storage: A temporary container for holding acids, bases, or standard solutions during an experiment.
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General Lab Use: Measuring out rough volumes of liquids for dilutions or buffer preparation.
Why Choose Boro 3.3?
While cheaper soda-lime glass may suffice for room-temperature storage, Borosilicate 3.3 is the industry standard for any task involving heat or aggressive chemicals. It is a durable, autoclave-safe, and long-lasting investment that ensures safety and reliability in both academic and industrial laboratories.
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