Specifications Table

Product Material – Borosilicate Glass 3.3

Grade – Class A Laboratory Grade

Application – Liquid handling, mixing, heating, and storage

Product Overview

This 250ml borosilicate glass beaker is engineered for durability and precision in laboratory environments. Crafted from high-grade borosilicate glass 3.3, it offers exceptional resistance to thermal shock, chemical corrosion, and mechanical stress, ensuring reliable performance across experiments. The uniform wall thickness and reinforced rim enhance structural integrity, while the clear glass construction allows for easy observation of contents. Designed to meet Class A laboratory standards, this beaker provides accurate volume measurements with minimal error margins. Its smooth, non-reactive surface prevents contamination, making it suitable for sensitive applications. The beaker’s ergonomic design includes a convenient pouring spout for controlled liquid transfer, reducing spillage risks. Whether used for heating solutions, preparing reagents, or general liquid handling, this versatile beaker maintains stability under extreme temperature fluctuations (up to 500°C). The low coefficient of expansion ensures longevity, even with repeated autoclaving or exposure to corrosive substances. Lightweight yet robust, it balances ease of handling with resistance to chipping or cracking, making it a staple in professional and educational labs alike.

FAQs

1. What makes borosilicate glass beakers better than regular glass beakers?

Borosilicate glass contains boron trioxide, which significantly lowers its thermal expansion coefficient. This makes it far more resistant to temperature changes, chemical corrosion, and mechanical stress compared to standard soda-lime glass, reducing the risk of cracking during heating or cooling.

2. Can this beaker be used directly over an open flame?

While borosilicate glass can withstand high temperatures, direct exposure to an open flame is not recommended without a heat diffusion accessory like a wire gauze. Uneven heating can create hot spots, potentially causing thermal stress. Always use a heat source with even distribution.

3. How should I clean this beaker to avoid residue buildup?

Rinse immediately after use with distilled water to prevent residue hardening. For stubborn deposits, soak in a mild detergent solution or a 1:10 hydrochloric acid-water mix (for inorganic residues), then scrub gently with a non-abrasive brush. Avoid harsh scouring pads that may scratch the surface.

4. Is this beaker compatible with acidic or alkaline solutions?

Yes, borosilicate glass 3.3 exhibits excellent chemical durability against most acids, alkalis, and organic solvents. However, prolonged exposure to hydrofluoric acid or strong alkaline solutions at high temperatures may eventually etch the glass. Always verify compatibility for specific chemicals.

5. What’s the difference between this Class A beaker and a Class B beaker?

Class A beakers adhere to stricter tolerances for volume accuracy (typically ±0.5-1.0% of nominal capacity) and are calibrated for precise measurements, while Class B beakers have wider tolerances (±2-5%) and are generally used for qualitative work. This beaker meets Class A standards for reliable quantitative applications.