Kjeldahl Digestion Stove Features：
1. Highly efficient digestion: The Infrared Quartz Tube heating structure exhibits superior heating performance, a high thermal effect conversion rate, and resistance to acids and alkalis. Each heating element is independently controlled by a switch.
2. Excellent sealing: The connection between the collection tube and the digestion tube is completely sealed with a corrosion-resistant fluorine rubber ring, ensuring enhanced safety during usage.
3. Integrated heating of aluminum ingot/graphite: Heating within the furnace core attains an optimal thermal effect, expedites the digestion process, and reduces temperature variations within the core, resulting in uniform sample digestion.
4. Stainless steel heating tubes: In a well-shaped structure, they offer a large heating area. Heating with stainless steel heating tubes and the conduction of heat by aluminum ingot/graphite feature a high conversion rate of thermal effect and resistance to acids and alkalis.
5. Stainless steel countertop: It demonstrates good corrosion resistance.
6. Optimized treatment of the furnace chamber: Even in a long-term high-temperature environment, there will be no phenomena such as powder shedding, grain loss, or damage due to oxidation.
7. Heat dissipation isolation: It mitigates the influence of high-temperature radiation from the furnace body on the control system.

Kjeldahl Distillation Unit Features：
1. Independent Pipeline System: Multiple pipelines are independently controlled to prevent cross-contamination.
2. Manual Lifting Pallet: The height of the pallet can be adjusted in accordance with the size of the test bottles.
3. Water Level Safety Monitoring: The water level is automatically controlled, and it is equipped with an anti-dry-burning function.
4. Accuracy of Sample Distillation: The program conducts automatic distillation and adopts reasonable segmented and liquid addition methods.
5. Intermittent Alkali Addition: It ensures that the acid-base reaction is in a controllable state and avoids splashing during sample distillation.
6. RDU-C-06 Liquid Addition Volume Setting and Storage Program: An editable program is available for setting the volumes of distilled water, alkali, and boric acid addition and for storing the program.

Kjeldahl Digestion Apparatus Working Environment Conditions:
1. Temperature: 0 - 40°C.
2. Relative Humidity: ≤ 80%.
3. Power Supply: Voltage 220V. For the Infrared Quartz Tube heating mode, the frequency is 50Hz; for the Stainless Steel Heating Tube heating mode, the frequency is 50 - 60Hz.
4. Ventilation: It is mandatory to be utilized in a well-ventilated setting, optimally within a fume hood, to prevent the escape of harmful gases.
5. Water Supply and Drainage: Guarantee smooth water supply and drainage in the laboratory. The placement of the instrument should be within 1.5 meters from the water source.
6. Waste Gas Treatment: It is advisable to be equipped with a waste gas neutralization device or an exhaust system connected to the fume hood for handling the acidic gases generated during digestion.

Kjeldahl Digestion Apparatus Precautions:
1. Sample Processing: During digestion, the temperature should be increased gradually to prevent sample overflow or nitrogen loss. For high-fat and high-sugar samples, the digestion time needs to be prolonged.
2. Safety Protection: Operators must don protective gear and monitor the reaction process throughout.
3. Equipment Maintenance: Residues should be promptly cleaned after usage. Regularly inspect the temperature control, pressure control systems, and sealing components.
4. Cooling and Shutdown: After digestion is accomplished, it is necessary to cool down to room temperature. The water source must not be turned off during the cooling stage to ensure the complete exhaustion of waste gas.
5. Emergency Situations: In the event of leakage or fire, the power supply should be immediately cut off and emergency measures adopted.

Distiller for Nitrogen Determination Apparatus Working Environment Conditions:
1. Temperature: 10°C - 35°C.
2. Humidity: Relative humidity ≤ 80%.
3. Power Supply: AC 200V / 50Hz.
4. Ventilation: It needs to be placed in a well-ventilated laboratory to prevent the accumulation of harmful gases.
6. Installation: The instrument should be placed on a stable, clean and horizontal laboratory bench, avoiding direct sunlight and vibration.
7. Environment: No corrosive gases.

Distiller for Nitrogen Determination Apparatus Precautions:
1. Startup Sequence: Switch on the cooling water first, followed by the power supply.
2. Monitoring Pressure: Pay attention to the pressure during distillation to avoid overpressure.
3. Protective Measures: Wear protective equipment during operation to avoid contact with high-temperature components and chemical reagents.
4. Shutdown Processing: After use, discharge the gas in the barrel, clean up the residual alkali solution to ensure safety.