Graphite COD digestion instrument

The graphite COD digestion instrument plays an important role in environmental monitoring, sewage treatment, scientific research institutions, and other fields due to its heating uniformity, temperature stability, digestion speed, and multi-channel design. The advantages of accuracy, efficiency, safety, and ease of use make this instrument a powerful assistant in the laboratory. With the continuous advancement of technology and the expansion of application fields, graphite COD digestion instrument will play a more important role in the future.

The working principle of the graphite COD digestion instrument is mainly based on high-temperature heating and oxidation reaction under acidic conditions. The instrument utilizes the high-temperature thermal conductivity of graphite to rapidly heat and digest water samples, allowing organic matter in the water sample to react with oxidants (such as potassium dichromate) under acidic conditions, generating carbon dioxide and water. By measuring the changes in oxidants before and after the reaction, the chemical oxygen demand (COD) in the water sample can be calculated.

Technical Features

Uniform heating: The graphite digestion instrument uses graphite heating blocks or panels to provide a uniform heating environment, ensuring consistent temperature inside each digestion tube and avoiding digestion or sample loss caused by local overheating or cold spots.

Temperature stability: The instrument is equipped with a high-precision temperature control system, which can accurately control the digestion temperature and ensure stable reaction conditions. This is crucial for accurate determination of COD.

Rapid digestion: The digestion time is short, usually several hours, which can significantly improve experimental efficiency. Meanwhile, some models adopt advanced heating elements and optimized heating modes, further shortening the digestion time.

Multi channel design: supports multiple digestion tubes working simultaneously, suitable for rapid processing of large quantities of samples. This greatly improves the efficiency of laboratory work.

Safety protection: The instrument has multiple safety protection functions such as over temperature protection and dry burning protection to ensure safe operation. At the same time, the shell adopts insulation design, reducing heat loss and avoiding the risk of burns caused by accidental contact by operators.

Intelligent operation: Some models are equipped with color touch screens and intelligent control systems, making operation simple and intuitive. Users can accurately set the digestion temperature and time according to different water sample types and digestion methods, achieving one click operation.

application field

Graphite COD digestion analyzer is widely used in the following fields:

Environmental monitoring: used to analyze indicators such as COD in water quality samples, which helps evaluate the degree of water pollution and treatment effectiveness.

Wastewater treatment: In industrial wastewater treatment plants, this instrument can be used to monitor COD changes during the wastewater treatment process, providing data support for process adjustments.

Research institutions: In fields such as chemical analysis and environmental science, graphite COD digestion instrument is an experimental tool.

Food and pharmaceuticals: Although mainly used for water quality analysis, graphite digestion analyzers are also applied in the food and pharmaceutical industries, such as processing medicinal materials, food samples, etc., for the determination of metal elements and other harmful substances.

Strengths Analysis

Accuracy: The graphite digestion instrument can provide a uniform heating environment and stable reaction conditions, ensuring the accuracy of COD determination.

Efficiency: Short digestion time, support for multi-channel operation, greatly improving experimental efficiency.

Security: It has multiple security protection functions to ensure the safety of operators.

Usability: The intelligent operating system and intuitive user interface make the instrument easy to pick up and operate.

Durability: Graphite material is corrosion-resistant and heat-resistant, extending the service life of the equipment.

COD digestion instrumentPerformance parameters:

1Dissolving temperature: room temperature~180℃Automatic temperature control.

2Temperature control:±0.5℃

3Dissolving time:1~1000min

4Quantity of single digestion samples:20a

5Power supply:AC220V

6power consumption：400W

7Overall dimensions:230 mm×310 mm×140mm

8Weight: Approximately4.5Kg

9TheCODValue measurement range:5~2000mg/L

Instrument features:

1Fast heating speed, just need15minCan be raised to the set temperature.

2High temperature

3Equipped with multi-point calibration to achieve measurement of set points,*Eliminating the errors caused by the nonlinearity of temperature sensors in common digesters on the market.

4Adopt effective insulation measures,Reduced energy consumption.