PYREX 500mL Round Bottom Kjeldahl Digestion Flask with Long Neck – 5420-500

The PYREX 500mL Round Bottom Kjeldahl Flask with Long Neck is a high-quality borosilicate glass laboratory flask designed for nitrogen determination, protein analysis, and chemical digestion procedures. Its round-bottom construction promotes uniform heating, while the reinforced long neck provides additional strength and a secure stopper fit. Engineered for thermal shock and chemical resistance, it is ideal for food testing, agricultural, pharmaceutical, research, and quality control laboratories. Key Features and Specifications - Capacity: 500mL - Material: PYREX borosilicate glass - Flask Type: Kjeldahl digestion flask - Bottom Design: Round bottom - Neck Style: Long neck with reinforced tooled mouth - Height: Approximately 324mm - Outer Diameter: Approximately 101mm - Stopper Compatibility: No. 6 rubber stopper - Stopper Included: No - Thermal Resistance: Controlled wall thickness for improved thermal shock resistance - Chemical Resistance: Suitable for demanding chemical digestion procedures - Design: Durable glass construction for laboratory heating applications - Reusable: Yes - Manufacturer Packaging: 6 pieces per pack; 24 pieces per case - Standards: Suitable for ASTM E258 procedures; ASTM E1377 reference - Applications: Kjeldahl nitrogen determination, protein analysis, chemical digestion, food testing, agricultural analysis, and laboratory research