Kjeldahl Flask without Joint
Product Code : EL-GF-10158
Quick answer: The Kjeldahl Flask without Joint is a borosilicate glass, long-neck flask suitable for the determination of nitrogen by the Kjeldahl method, available in 100ml, 300ml, 500ml and 800ml capacities.
| Capacity (ml) | Diameter (mm) | Height (mm) |
|---|---|---|
| 100 | 60 | 200 |
| 300 | 85 | 295 |
| 500 | 101 | 300 |
| 800 | 117 | 340 |
Material: Borosilicate glass. Application: Nitrogen determination (Kjeldahl method).
Why the Long Neck on a Kjeldahl Flask
The Kjeldahl method for nitrogen determination involves digesting a sample in concentrated acid at high temperature, a step that can produce vigorous bubbling and fuming. The long neck on this flask helps contain splashing during digestion, and the borosilicate construction gives the thermal-shock resistance needed for sustained heating on a digestion block or burner.
Frequently Asked Questions
What is the Kjeldahl Flask used for?
It is suitable for the determination of nitrogen, most commonly by the Kjeldahl digestion method.
Does this flask have a ground joint?
No, this is the without-joint version. A jointed Kjeldahl Flask is also available.
What capacities are available?
Capacities are available in 100ml, 300ml, 500ml and 800ml.
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Explore more from the Glass Flask range, including the Kjeldahl Flask (with joint).
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Last updated: September 2026.
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