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Flask, Kjeldahl
High-Elongated Neck Design: Features a precision-calibrated neck to maximize the internal reflux surface area, ensuring safe containment of corrosive vapors during high-temperature organic decomposition.
Borosilicate 3.3 Composition: Fabricated from Type I Class A borosilicate glass, providing a low coefficient of expansion and maximum durability against concentrated sulfuric acid and catalysts.
₹388.00
Quick answer: A Kjeldahl Flask is a long-necked flask used for the Kjeldahl digestion method, in which an organic sample is heated with acid to determine its nitrogen or protein content. Flask, Kjeldahl is priced at approximately ₹388 (indicative market benchmark, incl. GST, August 2026).
A Kjeldahl flask has a long neck and a rounded body, designed for the Kjeldahl method of nitrogen and protein analysis. A sample is digested by heating with concentrated acid, converting organic nitrogen into ammonium sulfate; the long neck helps contain refluxing acid vapor and reduces the risk of splashing during this vigorous digestion step. It’s a standard piece of equipment for nitrogen and protein content determination in college and research chemistry and food science laboratories.
Technical Specifications
| Parameter | Detail |
|---|---|
| Product Type | Kjeldahl flask |
| Function | Kjeldahl digestion for nitrogen/protein analysis |
| Design | Long neck to contain acid vapor and reduce splashing |
| Exact capacity | Not independently verified for this listing — confirm with STEMAids before ordering |
| Thermal stability rating | Manufacturer-stated — verify before publishing |
| Price | Approx. ₹388 (indicative market benchmark, incl. GST, August 2026) |
| Exact dimensions/technical detail | Not independently verified for this listing — confirm with STEMAids before specifying in a tender |
Applications
- Kjeldahl digestion for nitrogen and protein content analysis
- Food science and agricultural testing practicals
- College and research chemistry laboratory nitrogen analysis
- General-purpose acid digestion requiring reflux containment
Care & Maintenance
- Use appropriate heating equipment designed for Kjeldahl digestion, following standard safety precautions for hot concentrated acid
- Handle with appropriate PPE given the corrosive acids typically used
- Clean thoroughly after each use to prevent residue and cross-contamination
Why Choose STEMAids
STEMAids supplies a wide range of Chemistry Lab Equipments including Aspirator for related laboratory and classroom needs. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and ISO 9001:2015 certified, supplying schools, colleges and vocational institutes across India and for export.
Frequently Asked Questions
What is a Kjeldahl flask used for?
It’s used for the Kjeldahl method of digesting an organic sample with acid to determine its nitrogen or protein content.
Why does this flask have a long neck?
The long neck helps contain refluxing acid vapor and reduces the risk of splashing during the vigorous heating step of digestion.
What capacity does this Kjeldahl flask hold?
The exact capacity has not been independently verified for this listing — confirm with STEMAids before ordering.
Is this suitable for a college food science or chemistry lab?
Yes — Kjeldahl flasks are standard equipment for nitrogen and protein analysis practicals in food science and chemistry coursework.
Does STEMAids supply a complete Kjeldahl digestion setup?
Contact STEMAids to confirm compatible digestion and distillation apparatus for a complete Kjeldahl setup.
Is STEMAids a registered manufacturer of this product?
Yes. Eduscope Smart Learning Solutions Private Limited is a Udyam-registered micro manufacturing enterprise (UDYAM-DL-06-0069460) and is ISO 9001:2015 certified. See the About page for full registration and certification details — manufacturer-stated, verify before citing in procurement documents.
Last updated: 29 August 2026.
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