DURAN 212311707 Kjeldahl Flask Borosilicate Glass 50 mL
The DURAN 212311707 is a Kjeldahl flask with a nominal volume of 50 mL, manufactured from high-quality DURAN® borosilicate glass 3.3. This flask is specifically designed for Kjeldahl digestion and distillation procedures, commonly used in nitrogen determination and protein analysis in food, feed, and environmental laboratories.
The flask features a round-bottom geometry, which promotes uniform heating during digestion, reducing the risk of localized overheating. Made from borosilicate glass 3.3, it ensures excellent chemical resistance against concentrated acids, alkalis, and aggressive reagents, while withstanding repeated heating and cooling cycles.
Key Specifications & Features
| Parameter | Value |
|---|---|
| Catalogue Number | 212311707 |
| Product Type | Kjeldahl Flask |
| Capacity | 50 mL |
| Material | DURAN® Borosilicate Glass 3.3 |
| Shape | Round-bottom |
| Neck Type | Standard narrow neck |
| Thermal Resistance | High, uniform wall thickness |
| Chemical Resistance | Excellent, Type I neutral glass |
| Sterilization | Autoclavable (~121 °C) |
Applications
Kjeldahl method for nitrogen and protein determination
Food & beverage analysis (protein, nutrition analysis)
Agricultural & feed testing (fertilizer, soil, animal feed)
Environmental analysis (wastewater, soil samples)
Laboratory digestions requiring strong acid resistance
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