A 120 mm Watch Glass is a larger-format laboratory tool, typically used for covering high-capacity beakers or handling larger quantities of solid samples.

Key Specifications

• Diameter: 120 mm (approximately 4.7 inches).

• Beaker Compatibility: This size is the standard fit for 600 mL, 800 mL, and some 1000 mL beakers.

• Material: Usually available in both standard soda-lime glass for general use and borosilicate (Pyrex-style) for higher thermal resistance.