Flasks - Kjeldahl with Tooled Neck

What is it?

The Kjeldahl Flask is a specialized laboratory vessel specifically designed for the digestion phase of the Kjeldahl method (Nitrogen determination). It features a round bottom for uniform heating and a uniquely long neck. This long neck acts as a built-in air condenser, reducing the loss of sample through splashing and containing the corrosive acid vapors used during organic matter digestion.

Key Features and Benefits

• Premium Borosilicate 3.3 Glass: Engineered to withstand extreme temperatures and the heavy use of concentrated sulfuric acid without cracking or eroding.
• Integrated Reflux Action: The signature long neck prevents "bumping" and allows vapors to condense and flow back into the flask, ensuring sample integrity.
• Reinforced Beaded Rim: Designed with a thickened rim to provide extra mechanical strength, reducing the risk of chipping during handling or cleaning.
• Uniform Wall Thickness: Meticulously manufactured with balanced glass distribution to ensure superior thermal stability and resistance to thermal shock.
• Chemical Inertness: Highly resistant to chemical attack, providing a contamination-free environment for sensitive analytical results.

Available Capacities

We manufacture Kjeldahl Flasks in a wide range of sizes to suit micro and macro analysis: 10mL, 30mL, 100mL, 300mL, 500mL, and 800mL.

Quality Commitment: Every Kjeldahl Flask is meticulously annealed in digital lehrs to remove internal glass stress, ensuring maximum safety and reliability during high-heat digestion processes.