DURAN 212313605 Kjeldahl Flask Borosilicate Glass 250 mL
The DURAN 212313605 is a 250 mL Kjeldahl flask made from DURAN® borosilicate glass 3.3, designed for precise and reliable nitrogen and protein determination using the Kjeldahl method. This flask is widely applied in analytical laboratories for food, feed, fertilizer, and environmental testing.
Its round-bottom design ensures efficient and uniform heat transfer during digestion, minimizing localized overheating. The narrow neck allows easy connection with digestion and distillation units. Thanks to its borosilicate 3.3 construction, the flask offers excellent resistance to thermal shock and chemical attack, even under repeated heating with concentrated acids and alkaline solutions.
Key Specifications & Features
| Parameter | Value |
|---|---|
| Catalogue Number | 212313605 |
| Product Type | Kjeldahl Flask |
| Capacity | 250 mL |
| Material | DURAN® Borosilicate Glass 3.3 |
| Shape | Round-bottom |
| Neck Type | Narrow neck |
| Thermal Resistance | High, with uniform wall thickness |
| Chemical Resistance | Excellent, Type I neutral glass |
| Sterilization | Autoclavable (~121 °C) |
Applications
Kjeldahl nitrogen and protein determination
Food & beverage laboratories (nutritional protein analysis)
Agriculture and fertilizer testing
Animal feed analysis
Environmental laboratories (wastewater, soil, sludge digestion)
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