Automatic Kjeldahl Analyzer DW-K1100F
The DW-K1100F is an automatic Kjeldahl analyzer that integrates distillation, titration, calculation, and data treatment based on the classic Kjeldahl nitrogen determination method. Designed for enhanced performance, this specific model features an upgraded ARM operating system for broader method editing, adopts a 300ml digestion tube, and uniquely enables highly efficient, simultaneous titration during the distillation process.
To ensure maximum accuracy and ease of use, the device is equipped with an advanced core control system paired with a high-accuracy charging pump and titration system. Its powerful automation streamlines the entire workflow, effortlessly handling the automatic waste discharge and cleaning of both digestion tubes and titration cups, while real-time condensation temperature monitoring, steam supply control, and multiple fluid level detections guarantee a safe and smooth testing process.
Features
- 4 KNF Pumps for Accurate Dosing: ensures precise reagent delivery and liquid volume measurement.
- 1.0 μL/step Titration Accuracy: supports high-precision titration and reliable endpoint results.
- 300 mL Digestion Tube Compatibility: supports φ42 mm tubes and is compatible with similar products.
- Built-in Cleaning Programs: includes digestion tube, receiving cup, alkali pipeline, boric acid pipeline, acid washing, and steam bottle evacuation for easier routine maintenance.
Characteristic
- Automatic waste discharge and cleaning ensure operator safety and save time.
- External titration cup design gives operator real-time control of the whole test process.
- Steam flow is controllable, satisfying different test requirements.
- Regent barrel enjoys fluid absence warning function, ensuring smooth test going.
- High-precision charging pump and titration ensure test results’ accuracy.
- The temperature of distilled liquid is detected real time. If the temperature of distilled liquid is abnormal, to ensure the accuracy of experiment’s result, instrument will stop working.
- A double distillation model is used to meet different experiments, to retard the speed of acid-base reaction.
- Digestion tube fast drain function is used to avoid the operator touch distilled hot reagents, protecting operators.
- USB or RS485 interface is optional for PC connection.
Applications of the Kjeldahl Nitrogen Analyzer
Food and Agricultural Product Testing:
Widely used for the quantitative analysis of protein content in grains (wheat, corn), dairy products, meat, beverages, and condiments. It serves as the legal basis for food safety supervision and nutrition labeling.
Agricultural and Environmental Monitoring:
Used to determine total nitrogen in soil, analyze nitrogen metabolism in plants, and determine nitrogen content in fertilizers (organic fertilizers, compound fertilizers). In the water treatment field, it is used to determine Kjeldahl nitrogen (including ammonia nitrogen and organic nitrogen that can be converted into ammonium salts) in industrial wastewater.
Feed Industry Quality Control:
Used to determine the crude protein content of raw materials such as compound feed, soybean meal, and forage to assess feed nutrient ratios and quality grades.
Pharmaceutical and Chemical Research:
Applied to the purity analysis of proteins or nitrogen-containing components in biological products and pharmaceuticals, as well as the determination of nitrogen content in chemical samples such as natural rubber and ores.
Kjeldahl Nitrogen Analyzer Certificate of Conformity
FAQ
Specification
| Measuring range | 0.1mg ～200mg N |
| Analysis time | 5～10min/sample |
| Reproducibility | Average value relative error ±0.5% |
| Recovery | ≧99.5% |
| Burette volume | 1.0μL/step |
| Sample capacity | solid≦5g/sample, liquid≦20mL/sample |
| Water consumption in the distillation process | 1.5L/min |
| Data storage capacity | DW-K1100F: 1800 groups |
| Power supply | 220VAC±10%, 50Hz |
| Power | 2Kw |
| Net weight | 38Kg |
| Dimensions | 455mm×391mm×730mm |
Differences Between Models:
| Parameters | K1100F | K9860 | K9840 |
| Automatic | Y | Y | N |
| Measuring range | 0.1mg～200mg N | 0.1mg～200mg N | 0.1mg～240mg N |
| Reproducibility | Average value relative error±0.5% | Average value relative error±0.5% | Average value relative error±0.5% |
| Recovery | ≥99.5% | ≥99.5% | ≥99.5% |
| Sample capacity | solid 5g/sample, liquid 20mL/sample | solid 5g/sample, liquid 20mL/sample | solid 5g/sample, liquid 20mL/sample |
| Water consumption in the distillation process | 1.5L/min | 1.5L/min | 1.5L/min |
| Data storage | 1800 groups | 1000 groups | — |
| Burette volume | 1.0μL/step | 2.0μL/step | — |
| Analysis time | 3-8min/sample | 5～10min/sample | — |
| Power supply | 220VAC±10%, 50/60Hz | 220VAC±10%, 50/60Hz | 220VAC±10%, 50/60Hz |
| Power | 2KW | 2KW | 1.3KW |
| Function | K1100F | K9860 | K9840 |
| Steam Flow Adjustment | Y | Y | N |
| Steam model | Y | N | N |
| Digestion tube discharge | Y | N | N |
| Digestion tube cleaning | Y | N | N |
| Reagents bottle liquid level monitor | Y | N | N |
| Receiving cup cleaning | Y | Y | – |
| Burette calibration | Y | Y | – |
| Data output | Y (optional) | N | N |
| Method storage | Y | Y | N |
| Boric acid pipeline cleaning | Y | Y | N |
| Alkali pipeline cleaning | Y | Y | Y |
| Safety Door | Y | Y | Y |
| Digestion tube on position monitor | Y | N | Y |
| Condensing water flow monitor | Y | Y | Y |
| Water level monitor | Y | Y | Y |
| Steam generator temperature overload protection | Y | Y | Y |
| Steam generator pressure overload protection | Y | N | N |
| Liquid level monitor for Alkali/ acid/ Distilled water bottle | Y | N | N |
- Y: with this function.
- N: without this function.
- -: without this hardware configuration.
Model Selection and Configuration Recommendations:
- If Need Kjeldahl Method with Digester, you can choose DW-SH220F or SH420F;
- Digestion process completed by DW-SH220F Kjeldahl Digester or SH420F Kjeldahl Digester;
- Heavy Metal Digestion can choose SH230N Heavy Metal Digester;
Customer Feedback of DW-K1100F
Why Choose Us?
One-Station Shopping
“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem.
Customer-centric Services
User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country.
Online Support
To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.
100% Quality Guarantee
1-year free warranty includes repairing damaged parts and replacing selected ones (shipping extra). 5% is charged to extend it before it expires.
