PYREX 300mL Round Bottom Kjeldahl Digestion Flask with Long Neck – 5420-300

The PYREX 300mL Round Bottom Kjeldahl Flask with Long Neck is a high-quality borosilicate glass flask designed for nitrogen determination, protein analysis, and chemical digestion procedures. Its round-bottom construction supports uniform heating, while the reinforced long neck provides additional strength and a secure stopper fit. Manufactured with controlled wall thickness for thermal shock and chemical resistance, it is suitable for food testing, agricultural, pharmaceutical, research, and quality control laboratories. Key Features and Specifications - Capacity: 300mL - Material: PYREX borosilicate glass - Flask Type: Kjeldahl digestion flask - Bottom Design: Round bottom - Neck Style: Long neck with reinforced tooled mouth - Height: Approximately 298mm - Outer Diameter: Approximately 79mm - Stopper Compatibility: No. 5 rubber stopper - Stopper Included: No - Thermal Resistance: Controlled wall thickness for thermal shock resistance - Chemical Resistance: Suitable for demanding chemical digestion procedures - Design: Uniform glass construction for laboratory heating applications - Reusable: Yes - Sterility: Non-sterile - 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