When choosing an experimental ashing furnace, multiple factors need to be considered to ensure that it meets experimental requirements and has good performance. Here are some key purchasing points:

A commonly used small experimental ashing furnace (click on the image to view product details)

1. Temperature range and uniformity
Temperature range: Select an ashing furnace with an appropriate temperature range based on the ashing temperature required for the experimental sample. Generally speaking, the temperature range of the ashing furnace should be able to cover the highest temperature required for the experiment, such as the common 815 ℃ (coal sample ashing) or 550 ℃ (food sample ashing).
Temperature uniformity: The temperature inside the furnace of the ashing furnace should be as uniform as possible to ensure that the sample can be uniformly heated and avoid experimental errors caused by local overheating or underheating.

2. Furnace cavity volume and sample size
Furnace cavity volume: Select an ashing furnace with a suitable furnace cavity volume based on the size and quantity of the experimental samples. Excessive or insufficient furnace volume may affect the ashing effect.
Sample processing capability: Consider whether the ashing furnace can process multiple samples simultaneously, as well as the convenience and safety of sample placement.

3. Ventilation performance
Ventilation effect: Good ventilation performance helps to fully burn the sample and reduce pollution. Some ashing furnaces are designed with air circulation systems that can accelerate airflow, facilitate rapid and thorough combustion of samples, and accelerate the removal of impurities from the chimney.
Chimney design: Check whether the ashing furnace is equipped with an effective chimney or exhaust system to ensure that the smoke and harmful gases generated by combustion can be smoothly discharged from the laboratory.

4. Furnace cavity materials and corrosion resistance
Furnace cavity material: The furnace cavity material of the ashing furnace should have good high temperature resistance and corrosion resistance to prevent smoke and corrosive substances generated during the ashing process from damaging the furnace body. Common materials include stainless steel, ceramic fibers, etc.
Corrosion resistance: For samples that may produce corrosive smoke, special attention should be paid to the corrosion resistance of the ashing furnace.

5. Safety performance
Overtemperature alarm: Select an ashing furnace equipped with an overtemperature alarm device to ensure timely alarm and action can be taken in case of abnormal temperature rise.
Grounding leakage circuit breaker: Some ashing furnaces are also equipped with grounding leakage circuit breakers to protect the safety of experimental personnel.

6. Convenience of operation and controller
Convenience of operation: The operation of the ashing furnace should be simple and easy to understand, making it convenient for experimental personnel to set up and adjust.
Controller: Select an ashing furnace equipped with a high-precision temperature controller to achieve precise measurement, indication, and automatic control of furnace temperature. Some controllers also provide flexible operating options and programming functions to meet various experimental needs.

7. Brand and after-sales service
Brand reputation: Choose well-known brands and ashing furnaces with good reputation to ensure product quality and after-sales service.
After sales service: Understand the after-sales service policy of the ashing furnace, including warranty period, maintenance service, etc., to ensure timely resolution of problems encountered during use.

Customized furnace size 1700 degree ashing furnace (click on the picture to view product details)

In general, when choosing an experimental ashing furnace, multiple aspects should be considered. It is recommended to consult technical personnel before purchasing to discuss the ashing furnace that is suitable for your own experimental plan!Click to learn more Muffle furnaces! Or click on online customer service to learn more about product information!