Kjeldahl Flasks – Borosilicate Glass for Digestion & Distillation

Our Kjeldahl Flasks are engineered specifically for Kjeldahl digestion and distillation procedures used in nitrogen and protein analysis. Featuring a tall, narrow profile and robust borosilicate glass construction, these flasks ensure efficient heat transfer and minimised sample loss during boiling. Their classic round-bottom design supports uniform heating, making them ideal for use with digestion blocks, heating mantles, and Kjeldahl apparatus systems across research, industrial, and educational laboratories.

Key Features

Optimised Kjeldahl Shape
Tall, tapered body minimises sample splashing and supports efficient digestion and distillation.

Premium Borosilicate Glass
Excellent chemical and thermal resistance, designed to withstand high temperatures and corrosive digestion mixtures.

Round Bottom Design
Ensures uniform heat distribution and compatibility with heating mantles and digestion units.

Thick, Durable Walls
Built to withstand the demanding conditions of Kjeldahl analysis, including strong acids and prolonged heating.

Available in Standard Kjeldahl Capacities
Common sizes such as 250 mL, 500 mL, and 800 mL suitable for various sample volumes and protocol requirements.

Clear Markings
Optional graduations available for visual volume checks (depending on model).

Ideal for Nitrogen & Protein Determination
Designed for laboratories in food analysis, agriculture, environmental science, and chemical manufacturing.