The temperature and humidity testing box is not "very good", only suitable for industry scenarios, budget, and compliance requirements. Firstly, we need to understand the selection parameters and application purposes of our temperature and humidity testing chambers. Temperature and humidity testing chambers on the market have different classifications and application fields. Let's take a look together below

　　Classification of temperature and humidity testing chambers

Divided by purpose: It can be divided into laboratory research and development type, production line quality inspection type, and walk-in constant temperature and humidity room. Laboratory research and development models have small volume and high accuracy; The production line quality inspection type has a medium volume and simple operation; The walk-in constant temperature and humidity room has a large volume and can be customized in size for testing large or heavy samples.

Divided by temperature and humidity range: there are conventional type, low temperature type, high temperature and high humidity type, etc. The conventional temperature range is generally -20 ℃~150 ℃, and the humidity is 20% RH~95% RH; Low temperature type can be as low as -40 ℃ or even -70 ℃; The high temperature and high humidity type can reach a temperature of 200 ℃ and a humidity of 98% RH or even 100% RH.

According to the cooling method, it can be divided into air-cooled and water-cooled types. Air cooled type does not require external cooling water and is easy to install; Water cooled refrigeration has high efficiency and low noise, making it suitable for long-term high load operation.

　　Application fields of temperature and humidity testing box

In the field of electronic appliances: used to test the performance stability of electronic components, mobile phones, communication devices, etc. in different temperature and humidity environments, ensuring that products can work normally in various usage environments.

In the pharmaceutical field, it can be used for drug stability testing, vaccine preservation and other experiments to ensure the quality and effectiveness of drugs.

In the field of food, it can conduct temperature and humidity resistance tests on food packaging materials, and can also be used for research on food storage conditions to extend the shelf life of food.

Materials field: It can evaluate the physical properties of materials under different temperature and humidity conditions, such as strength, toughness, etc., providing reference for the research and application of materials.

In the field of biology, it is suitable for cell culture, microbial culture, etc., providing a stable temperature and humidity environment for the growth and preservation of biological samples.

　　Core purchasing points

Accuracy and uniformity: Precision testing selects temperature control of ≤± 0.2 ℃, humidity of ≤± 1% RH, and uniformity of ≤± 0.5 ℃; Routine quality inspection can be relaxed to ± 0.5 ℃/± 3% RH.

Temperature and humidity range: Low temperature ≤ -40 ℃, choose two-stage compression; Select semiconductor dehumidification for low humidity ≤ 10% RH; Select anti condensation design for high humidity ≥ 98% RH.

Meet the criteria: MDR/ISO 13485 for medical examination; Looking at AEC-Q for cars; Semiconductor watch JEDEC.

After sales and cost: Imported brand accessories have long lead times and expensive maintenance; Domestic brands have fast response time (within 48 hours), easy replacement of accessories, and a more economical lifespan of 5-8 years.

　　Choose based on budget:

Adequate budget: ESPEC or Weiss prioritize long-term stability and compliance.

Medium budget+general industrial/new energy: Haida Instruments, balancing performance and price.

Limited budget+cost savings: Choose domestic non mainstream brands that meet the national standard GB/T 2423. The disadvantage is that the quality and performance are not guaranteed.