The MEDILAB Kjeldahl Flask is a specialised laboratory flask designed for nitrogen determination and digestion processes using the Kjeldahl method. Manufactured from high-quality Borosilicate Glass 3.3, it ensures exceptional thermal stability and chemical resistance during high-temperature digestion cycles. This flask is widely used in analytical labs for accurate protein analysis, wastewater testing, food analysis, agriculture, and chemical research. Its durability, precision, and compatibility with standard Kjeldahl equipment make it an essential tool in quality-driven scientific environments.

 Key Features

• Premium Borosilicate Glass 3.3: High thermal shock resistance, ideal for repeated heating and cooling.
• Uniform Wall Thickness: Ensures consistent heat transfer during digestion for accurate analysis.
• Strong, Durable Construction: Resistant to acids, alkalis, and aggressive digestion chemicals.
• Optimised Neck Design: Allows easy connection with digestion heaters, condensers, and distillation units.
• High Transparency: Crystal-clear clarity for monitoring reaction progress.
• Autoclavable and Reusable: Designed for long service life in routine laboratory workflows.
• Leak-Proof Performance: Precision-formed neck and rim ensure compatibility with Kjeldahl setups.
• Available in Multiple Sizes: Suitable for various digestion and titration capacities.

Material Specifications

• Material: Borosilicate Glass 3.3
• Thermal Resistance: Withstands high temperatures used in Kjeldahl digestion (up to ~500°C dry heat).
• Chemical Resistance: Highly resistant to most acids, alkalis, and organic solvents; ideal for sulphuric acid-based digestion.
• Low Thermal Expansion: Coefficient of expansion ~3.3 × 10⁻⁶ /°C — minimises breakage risk.
• Conforms to ISO / DIN standards for laboratory glassware quality and performance.
• Mechanical Strength: Designed for heavy-duty applications in analytical labs.

 Technical Specifications

• Available Capacities (Standard):
   50 ml to 2000 ml (as per the standard size table)
• Design Options:
   Round Bottom
   Long Neck / Short Neck (as per application)
• Tolerance:
  Manufactured with strict dimensional accuracy for consistent performance.
• Compatibility:
  Fits standard Kjeldahl digestion and distillation units used in research and industrial labs.
• Packaging:
  Individually packed or bulk-packed in high-strength, export-quality cartons with protective separators to avoid transit breakage.
• Accessories (Optional):
  Matching condensers
  Digestion tube holders
   Glass adapters and fittings

 Handling & Precautions

• Safe Use:
  Use on a stable digestion heater; avoid sudden temperature changes to prevent thermal shock.
• Cleaning Instructions:
  Rinse immediately after digestion; use laboratory-grade detergents; avoid abrasive scrubbing that may scratch the surface.
• Autoclaving:
  Safe for autoclaving; ensure slow heating and cooling.
• Heating Limits:
  Suitable for hot plate, heating mantle, or digestion block. Avoid direct flame contact unless fully supported.
• Do’s:
   Inspect for cracks before each use
  Use compatible clamps and supports
  Follow standard Kjeldahl safety guidelines
• Don’ts:
   Do not expose to sudden cold-liquid addition during heating
   Do not use with hydrofluoric acid (HF)
• Best Practices:
  Allow gradual cooling after high-temperature digestion to extend the flask’s lifespan.

 Applications

• Analytical Chemistry: Nitrogen content analysis using the Kjeldahl method.
• Food & Agriculture: Protein analysis in cereals, grains, animal feed, and fertilisers.
• Pharmaceutical Industry: Nitrogen estimation for raw materials and finished products.
• Environmental Testing: Wastewater, sludge, and soil nitrogen evaluation.
• Biotechnology & Life Sciences: Digestion and distillation procedures for sample preparation.
• Academic & Research Labs: Standard equipment for teaching and advanced research on nitrogen quantification.

The Kjeldahl Flask plays a central role in digestion workflows, ensuring accurate and reproducible results across a wide range of industries.

Why Choose MEDILAB

• 35+ Years of Manufacturing Expertise in scientific glassware.
• Trusted by Laboratories in 40+ Countries with a strong global presence.
• Export-Quality Production Standards ensuring consistency and reliability.
• OEM & Private Labelling Options available for distributors and brands.
• Precision Engineering for accurate analytical results every time.
• Superior Packaging & Worldwide Shipping with minimal breakage rates.

MEDILAB delivers laboratory glassware that meets international expectations for quality, performance, and durability—making it a trusted choice for professional scientific environments.