Kjeldahl Flask without Joint
Product Code : LSK-LF-10425
Kjeldahl Flask without Joint (SKU LSK-LF-10425) is a borosilicate glass flask with a plain neck, used for the determination of nitrogen by the Kjeldahl method. It comes in 100, 300, 500 and 800 mL capacities and suits agricultural, food, pharmacy and chemistry practicals that call for sample digestion. Testing laboratories, colleges, tender contractors and distributors can obtain it from Science Lab Supplies, which prepares the quotation and dispatches the flasks from Ambala, India.
Specifications
Each capacity of the plain-neck Kjeldahl flask is sized in the table below. In short, it is made of borosilicate glass with no ground joint at the neck, and across the four capacities the body diameter grows from 60 mm to 117 mm while the height rises from 200 mm to 340 mm.
| Specification | Value |
|---|---|
| SKU | LSK-LF-10425 |
| Glass | Borosilicate |
| Neck | Without joint |
| 100 mL size | 60 mm diameter, 200 mm height |
| 300 mL size | 85 mm diameter, 295 mm height |
| 500 mL size | 101 mm diameter, 300 mm height |
| 800 mL size | 117 mm diameter, 340 mm height |
| Purpose | Determination of nitrogen |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Kjeldahl Flask
In the Kjeldahl method a sample is digested in the flask with hot concentrated sulphuric acid, converting its nitrogen to ammonium salts that are later distilled and titrated. The plain neck suits set-ups without jointed connections, making this borosilicate laboratory glassware in India a practical digestion vessel.
- B.Sc. agriculture and soil science: estimating total nitrogen in soil and plant samples.
- Food technology and dairy labs: protein estimation from Kjeldahl nitrogen.
- B.Pharm. and analytical chemistry practicals: nitrogen content of organic compounds, finished by titration from Burettes with Schellbach stripe.
Digestion uses hot concentrated acid: work in a fume hood, hold the flask at an angle in a Three Prong Glassware Holding Clamp on a Laboratory Retort Stand, wear eye and hand protection, and carry out the procedure under supervision.
Standard Scope of Supply
The Kjeldahl Flask without Joint is supplied as a single flask in the capacity you order, as described above. Laboratories assembling a Kjeldahl apparatus in India can add digestion heaters, distillation glassware and titration items to the same quotation for a complete nitrogen-analysis bench.
Packing, MOQ and Lead Time
Whether you need a full digestion rack of flasks or a few for a demonstration, the quotation lists packing, delivery time and price for the quantity requested. As a laboratory glassware supplier in India, Science Lab Supplies can also add the jointed Kjeldahl Flask to the same order.
With an Importer-Exporter Code as a registered exporter, Science Lab Supplies is able to ship to buyers in Peru, Egypt, Iraq, Nigeria, Kenya and Ghana. Tell us how many flasks of each capacity you need on the contact page, gather them with your titration glassware in the enquiry cart, or check tender arrangements on the lab tender page.
Frequently Asked Questions
What is a Kjeldahl flask used for?
It is used for the determination of nitrogen: the sample is digested in the flask with concentrated acid before the nitrogen is distilled off as ammonia and titrated.
What does without joint mean?
The neck is plain, with no ground-glass joint. Choose this version for digestion set-ups that do not connect to jointed glassware; the separate Kjeldahl Flask model has a 19/26 or 24/29 socket.
Which capacities are available?
Four capacities are offered: 100, 300, 500 and 800 mL, with body diameters from 60 mm to 117 mm and heights from 200 mm to 340 mm.
Who supplies this Kjeldahl flask?
Nitrogen-analysis buyers can order it from Science Lab Supplies in Ambala, India, which prepares quotations for single replacement flasks as well as laboratory and tender quantities in all four capacities.
Related Nitrogen Analysis Glassware
These flasks, distillation items, burettes and bottles from the Laboratory Flasks, Chemistry Lab, Glassware Burette and Lab Glassware ranges cover the jointed Kjeldahl version and the distillation and titration steps after digestion, so a nitrogen-analysis bench can be equipped and quoted in one go.
- Kjeldahl Flask — jointed version with a 19/26 or 24/29 socket, from 50 mL to 800 mL.
- Distillation Apparatus — Liebig condenser, receiver adapter, still head and 500 ml boiling flask with 19/26 joints.
- Liebig Condenser 200mm — narrow-jacket borosilicate condenser with a 200 mm jacket.
- Distillation Flask — side-arm flask from 100 to 500 mL, 215 to 240 mm high.
- Conical Flask — 24/29 or 29/32 ground joint with hollow glass stopper.
- Borosilicate Glass Burette 50ml — borosilicate 3.3 barrel with a grease-free PTFE stopcock.
- Reagent Bottles Narrow-Mouth — colourless glass with a frosted stopper for prepared solutions.
Browse the full Laboratory Flasks range, the Chemistry Lab range for distillation apparatus, or all school lab equipment.
Last updated: 22 October 2026
