Beakers

Laboratory Beakers - Borosilicate Glass for Analytical Work

Borosilicate glass beakers serve as fundamental containers in every lab setting, handling everything from routine dilutions to complex sample preparations. Our beaker inventory covers 25ml through 5000ml capacities with Type I borosilicate construction rated for thermal shock resistance across -70°C to +500°C operating ranges. ISO 3819 and ASTM E960 compliant manufacturing ensures dimensional consistency and measurement reliability.

Griffin vs. Berzelius Design Differences

Griffin beakers feature low-form geometry where height approximately equals diameter, providing stability during magnetic stirring and heating applications. The wider base distributes heat evenly across hotplate surfaces.

Berzelius beakers employ tall-form construction with height roughly 1.5 times the diameter. This configuration minimizes evaporation losses during extended heating and works well alongside Test tubes in rack assemblies for comparative analysis. Tall-form designs suit titration work and small-volume precipitation reactions where vertical space optimization matters.

Graduated Measurement Accuracy

White enamel graduations fired into the glass surface maintain visibility through repeated autoclaving cycles at 121°C. Measurement tolerances follow ISO specifications:

• 50-250ml beakers: ±5% accuracy class
• 400-1000ml beakers: ±3% accuracy class
• 2000-5000ml beakers: ±2.5% accuracy class

Reinforced spout geometry controls pour rates and reduces drip-back contamination. When volumetric precision below ±1% is required, transfer measurements to calibrated glassware rather than relying on beaker graduations alone.

Heat-Resistant Borosilicate Materials

Type I borosilicate glass (3.3 expansion coefficient) withstands direct flame contact and rapid temperature transitions without fracturing. The silica-boron oxide matrix resists attack from acids, bases, and organic solvents across pH 0-14 ranges.

Chemical resistance exceptions: hydrofluoric acid etches glass surfaces, and hot phosphoric acid above 150°C causes gradual degradation. Polypropylene beakers from our Special offers section substitute for HF work, though they limit heating to 135°C maximum.

Pair beakers with appropriate Stoppers for temporary storage, and always wear Personal Protective Equipment & Safety Gear when handling corrosive reagents. Store inverted on High laboratory glasses drying racks to prevent dust accumulation inside clean vessels.