Nitrogen and Protein Analysis
Protein analysis plays a key role across the food industry, including segments like dairy, meat, feed, and cereals. Accurate nitrogen determination ensures labelling, formulation, and compliance. Borosil Scientific addresses this need with a reliable suite of Kjeldahl systems for distillation, digestion, and titration, designed specifically for consistent, accurate results.
-
Kjeldahl Magnus Distillation Unit
Smart, efficient distillation systems for labs for Kjeldahl Nitrogen or Distillation of volatile substances.For the modern chemist in Milk &...View Details -
Kjeldahl Magnus Distillation Unit with Autotitrator
Fully automated Nitrogen/ Protein determination units with touch user interface & inbuilt autotiration.For the modern chemist in Milk & Dairy,...View Details -
Kjeldahl Magnus Digesters
KBD digesters series offer heating through aluminium blocks, autolift sample handling, suction hood, test tubes, test tube rack and drip...View Details -
-
Kjeldahl Oracle Distillation Unit
KDI040, an automatic system controls all functions with a single rotary button. Allows automatic addition of steam, alkali, distilled water...View Details -
Kjeldahl Oracle Digesters
KBD digesters series offer heating through aluminum blocks, convenient sample handling, suction hood, test tubes, test tube rack and drip...View Details -
Classical Kjeldahl Distillation Unit
A traditional unit for chemist in Milk & Dairy, Food, Feed, Grains, Cereals, Oil Seeds, Meat & Meat Products, Beverage...View Details
Methods of Nitrogen Analysis in Laboratories
The Kjeldahl method is the industry standard for nitrogen analysis due to its broad applicability and acceptance in global testing protocols.
Borosil Scientific’s Kjeldahl nitrogen analyser systems streamline nitrogen quantification with modular equipment designed for routine and high-volume usage.
| Parameter | Kjeldahl Method |
| Accuracy | High |
| Sample Types | Versatile |
| Equipment Cost | Moderate |
| Throughput | Medium to high |
For high-throughput operations, Borosil Scientific’s Kjeldahl Magnus Distillation Unit offers features such as auto-alkali and water addition, programmable steam output, and automated residue removal. The modular layout with reinforced polymer body enables easy maintenance, especially in routine test environments.
Importance of Protein Analysis in Research
In scientific and industrial labs, protein analysis is central to validating nutritional value, studying enzyme activity, or developing bio-based formulations. Accurate protein measurement affects not just academic outcomes but also regulatory approvals.
Borosil Scientific’s Kjeldahl Magnus Digesters, equipped with aluminium block heating, deliver precise, homogenous temperature control across 6, 8, 12, or 20 positions, allowing flexible batch sizes without compromising digestion quality.
Protein measurement with the Kjeldahl method also supports:
-
Label Accuracy: Verified protein content on food and dietary product labels.
-
Compliance: Meets FSSAI and global Codex specifications.
-
Process Control: Monitors nitrogen-based intermediates in R&D.
-
Yield Calculation: Key in fermentation and microbial protein work.
Borosil Scientific enhances digestion control through programmable temperature profiles, auto-lift tube racks, and pre-set cycle management. All models include suction hoods and protective trays to manage corrosive fumes, prolonging equipment life.
Techniques for Nitrogen Determination
The Kjeldahl nitrogen determination process includes digestion, distillation, and titration. Each step must be carried out under controlled conditions for consistency and repeatability.
-
Digestion:
-
Conducted using Borosil Scientific’s Kjeldahl Magnus Digesters.
-
Sample tubes are heated using high-efficiency aluminium blocks.
-
Delayed scrubber activation for safe fume management.
-
Graphical display for ramp rates, time, and method control.
-
-
Distillation:
-
Performed using the Kjeldahl Magnus Distillation Unit.
-
Features real-time steam monitoring and auto-reagent addition.
-
Touchscreen interface with integrated nitrogen calculator.
-
Self-cleaning protocols reduce carryover.
-
-
Titration:
-
For full automation, Borosil Scientific offers the Kjeldahl Magnus Distillation Unit with Autotitrator.
-
Potentiometric titration using high-precision pH sensors.
-
Repeatable results, even in high-complexity matrices.
-
| Model | Key Feature | Application |
| Kjeldahl Magnus Distillation Unit | Touchscreen with auto steam control | HPLC buffers, volatile acid detection |
| Kjeldahl Magnus with Autotitrator | Integrated titration | High-throughput protein labs |
| KBD Digesters | Block heating, auto-lift | Food, dairy, and cereal digestion |
| Fume Scrubber | Four-stage neutralisation | Sulphur dioxide and acid fumes |
The fume scrubber is essential in any nitrogen analysis lab. Our model works without a fume hood and uses a four-stage neutralisation, condenser, distilled water, alkali, and carbon filter to trap harmful gases. The scrubber includes a protective front shield and is designed for easy assembly and maintenance.
The Kjeldahl method measures nitrogen content, which is then used to calculate protein content. Digestion breaks down the sample, distillation isolates nitrogen as ammonia, and titration quantifies it. Borosil Scientific offers complete systems for each step, optimised for reliability, speed, and safety.
Nitrogen is measured by digesting the sample with acid, distilling the ammonia, and titrating it to quantify nitrogen. Equipment such as Borosil Scientific’s Kjeldahl nitrogen analyser systems simplifies the process with programmable steps, auto reagent addition, and integrated calculation tools.
Protein analysis validates nutritional labels, aids quality control, and maintains compliance with food safety laws. Borosil Scientific’s Kjeldahl units serve food labs with features like multiple tube handling, precise heating, and fume safety. It helps labs work fast without compromising reliability.
Yes, nitrogen analysis is the basis of calculating protein content in organic compounds. Borosil Scientific supports this workflow with tools such as the Kjeldahl Magnus Distillation Unit, Digesters, and integrated autotitrators, which offer end-to-end coverage from digestion to result documentation.