Borosilicate Glass Beaker Set — 5 Sizes: 50/100/250/500/1000mL

Borosilicate glass tolerates thermal shock that would shatter ordinary glass — essential for any experiment involving heat, acid, or rapid temperature change.

These low-form Griffin beakers are fabricated from 3.3 borosilicate glass with a coefficient of thermal expansion of just 3.3 × 10⁻⁶/K — less than one-third that of soda-lime glass. Calibrated graduation marks are accurate to ±5% (ISO 3819 Class B). The flat base and pouring spout work on hot plates, ring stands, and directly over Bunsen burners.

• Set of 5: 50mL, 100mL, 250mL, 500mL, 1000mL — borosilicate 3.3
• Blue enamel graduation markings; poured spout for drip-free transfer
• Autoclave safe; compatible with all standard lab heating equipment
• ISO 3819 Class B calibration tolerances

Every purchase directly funds independent physics research at the Golden Physics Project.