Quick Answer: The Kjeldahl Flask is a borosilicate glass flask used for the determination of nitrogen. Capacities from 50 ml to 800 ml are listed with 19/26 or 24/29 sockets.
Last updated: October 2026
Key Features
Made of borosilicate glass
For nitrogen determination
Capacities of 50, 100, 300, 500 and 800 ml
Socket size 19/26 or 24/29
Technical Specifications
Specification
Value
Material
Borosilicate glass
50 ml
Socket 19/26, height 200 mm
100 ml
Socket 19/26 or 24/29, height 200 mm
300 ml
Socket 24/29, height 295 mm
500 ml
Socket 24/29, height 300 mm
800 ml
Socket 24/29, height 340 mm
About This Product
In the Kjeldahl method a sample is digested with acid in a long-necked flask, and the nitrogen it contains is then distilled off as ammonia and measured. The ground socket lets the flask connect to jointed apparatus. Export supply of the Kjeldahl Flask can be arranged to laboratories and schools in France, Mali, Cabo Verde, Cameroon and Syria.
Frequently Asked Questions
Q1. What is the Kjeldahl Flask used for? For the determination of nitrogen.
Q2. What sizes are listed? 50 ml and 100 ml with a 19/26 socket; 100 ml, 300 ml, 500 ml and 800 ml with a 24/29 socket. Heights run from 200 mm to 340 mm.
