Kjeldahl Flask
Product Code : EL-GF-10162
Quick answer: The Kjeldahl Flask is a borosilicate glass, long-neck flask with a ground socket, used for the determination of nitrogen by the Kjeldahl method, available from 50ml to 800ml with 19/26 or 24/29 socket sizes.
| Capacity (ml) | Socket Size | Height (mm) |
|---|---|---|
| 50 | 19/26 | 200 |
| 100 | 19/26 | 200 |
| 100 | 24/29 | 200 |
| 300 | 24/29 | 295 |
| 500 | 24/29 | 300 |
| 800 | 24/29 | 340 |
Material: Borosilicate glass. Application: Nitrogen determination (Kjeldahl method).
Socketed vs. Without-Joint Kjeldahl Flasks
This Kjeldahl Flask carries a ground socket (19/26 or 24/29 depending on capacity), letting it connect directly to a Kjeldahl distillation apparatus or condenser after digestion — unlike the Kjeldahl Flask without Joint, which is used purely for the digestion step. The long neck and borosilicate build remain the same across both versions, containing splashing during acid digestion and resisting the thermal shock of sustained heating.
Frequently Asked Questions
What is the Kjeldahl Flask used for?
It is used for the determination of nitrogen, most commonly by the Kjeldahl digestion and distillation method.
What socket sizes are available?
Socket sizes of 19/26 and 24/29 are available depending on the flask capacity.
How is this different from the Kjeldahl Flask without Joint?
This version has a ground socket for connecting to distillation apparatus, while the without-joint version is used for the digestion step alone.
Related Products
Explore more from the Glass Flask range, including the Kjeldahl Flask without Joint.
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Last updated: September 2026.
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