These flasks were originally developed in the 19th century by Johan Gustav Kjeldahl for use in his new apparatus for the determination of nitrogen. 

Key Features 

• Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A)
• Used for the determination of nitrogen by the Kjeldahl method
• With ground neck joint NS 24/29
• Note: The Kjeldahl method subjects flasks to severe chemical and thermal abuse. See care and maintenance of laboratory glassware for advice on safety and usage.

These flasks were originally developed in the 19th century by Johan Gustav Kjeldahl for use in his new apparatus for the determination of nitrogen. 

Key Features 

• Manufactured from 3.3 expansion borosilicate glass complying with ISO 3585 (ASTM E-438 Type 1 Class A)
• Used for the determination of nitrogen by the Kjeldahl method
• With ground neck joint NS 24/29
• Note: The Kjeldahl method subjects flasks to severe chemical and thermal abuse. See care and maintenance of laboratory glassware for advice on safety and usage.