COD Digester

Hangzhou Qiwei Instrument Co., Ltd. is one of the leading manufacturers and suppliers of cod digester in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk cod digester in stock here from our factory. We also accept customized orders.

 

 

 

For use with a reflux digestion setup, the HW6 and HW8 COD Digesters are designed for laboratory sample digestion and chemical oxygen demand( COD) testing. For water samples preparation before COD research, they offer controlled heating and timed operation.

Laboratory selection may be based on their regular sample workload using 6-tube and 8-tube configurations. The digestion assembly is made up of a crystalline heating panel, a smooth heating surface, and matched three-ball reflux condensers and 250 cc ground-mouth Erlenmeyer flasks.

Water quality laboratories, environmental monitoring departments, waste treatment facilities, commercial testing facilities, and school research laboratories that routinely pretreatment COD samples are available with the HW6 and HW8.

 

product key technologies

01.

This advanced COD digestion reactor is specially developed for pretreatment and chemical oxygen demand testing of water samples in laboratory scenarios. It adopts premium microcrystalline heating panel as the core heating component, which can withstand high temperature up to 800°C, featuring outstanding thermal stability and long service lifespan.

The microcrystalline heating platform delivers evenly distributed surface temperature, effectively avoiding local overheating and temperature deviation during experiments. With rapid heating and natural cooling characteristics, it shortens instrument preheating time and post-test cooling period, greatly improving working efficiency for continuous batch sample processing.

Inside the device, high-temperature resistant ceramic fiber heating disc is adopted as the heat source. The optimized structural design effectively reduces heat dissipation loss from the base and shell, forming a balanced and stable temperature field across the entire working area. It can steadily maintain the constant temperature environment required for COD digestion reactions.

02.

Uniform and stable thermal field ensures reliable experimental conditions, enabling high consistency and good repeatability of detection data. The whole machine features high temperature resistance, corrosion resistance and anti-scald performance, fully adapting to long-term daily laboratory operation and frequent batch digestion tasks.

It is widely adopted by environmental monitoring stations, sewage treatment enterprises, industrial labs, universities and research institutes for routine COD digestion and water sample pretreatment. Thanks to premium material configuration, energy-saving heating design and stable constant temperature performance, it has become standard essential equipment for professional water quality laboratories.

1. The microcrystalline panel has a smooth flat surface for easy daily cleaning; surface contamination can be simply wiped off to reduce improper operation damage.

2. Matched with customized glass reflux tube and optimized heat dissipation system, it ensures ideal digestion and reflux effect as well as high parallelism of sample test data.

3. Built-in digital temperature display, adjustable temperature range: 100°C–330°C.

4. Digestion time digitally displayed, the digestion time is between 0 and 180 minutes.

5. When digestion is completed, the heating system stops automatically with indicator off and buzzer reminder. The cooling fan will continue running for 120 minutes for delayed cooling before automatic shutdown.

6. Energy and water saving design, safe and stable operation, effectively lifting laboratory testing efficiency.

High-temperature heating and glass reflux are two components of Mackerel digestion. For routine laboratory use, appropriate products positioning, glassware inspection, and operating procedures are necessary.

Operators may: Ensure that the following steps are met before beginning a digestion cycle:

1. Place the tool on a workbench in a lab that is heat-resistant and steady.

2. Check for damage that can be seen in the connections, heartburn condensers, and glass flasks.

3. Verify that the desired check procedure's heat and digestion time are met with appropriateness.

4. Assemble the water and cooling systems according to the equipment's directions.

5. Before handling or cleaning, let the heat assemblage and glassware rest for a while.

Dual-fan air heating and three-ball liquid cooling are found in the HW6 and HW8. This cooling layout helps to regulate heat during laboratory use and aids in reflux digestion.

For details about over-temperature protection, dry-heating protection, and any additional protective enclosure, please refer to the confirmed model-specific safety specifications or contact our technical team.

1. What is the difference between the HW6 and HW8 COD Digesters?

The HW8 has 8 metabolism pipes, whereas the HW6 has 6 of them. The heartburn assembly, which includes three-ball burr condensers and 250 cc ground-mouth Erlenmeyer bottles, is used in both models. The laboratory's trial volume determines the best model.

2. What type of glassware is used with the HW6 and HW8 COD Digesters?

Three-ball reed reflux condensers and 250-ml ground-mouth Erlenmeyer flasks are included in the published configuration. When purchasing replacement parts or further accessories, please verify the joint and glassware dimensions.

3. Can the COD Digester be used with a COD analyzer or spectrophotometer?

Before COD assessment, samples are prepared using the digester. The metabolism method and measurement procedure should be followed when choosing the scientific instrument. Contact our professional team to verify that the digester, reagents, glassware, and measuring device are compatible.

4. Can laboratories and distributors order COD Digesters in bulk?

Yes. Buyers can request quotations for HW6 or HW8 units, together with matching reflux glassware and other required accessories. Please provide the model, order quantity, and destination country to help our team prepare a suitable quotation.

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