Purification testing chamberIt is a professional equipment used to simulate real indoor environments and quantitatively evaluate the purification performance of air purification equipment and materials. It is widely used in the performance testing and certification of air purifiers, fresh air systems, disinfection equipment, and decoration materials. Usually composed of cabin, air purification and temperature and humidity control system, air sampling system, pollution source generation device, etc. The cabin is made of 304 stainless steel or glass material to reduce the adsorption of pollutants; Equipped with a high-precision sensor network, it can monitor the concentration changes of pollutants such as PM2.5, formaldehyde, TVOC in real time, with a detection accuracy of 0.001mg/m ³. Its temperature and humidity control range is wide (temperature 10-35 ℃, humidity 0-99% RH), and the control accuracy is high (temperature ± 0.1 ℃, humidity ± 1% RH), ensuring the accuracy of test results.
Purification testing chamberThe precautions for clean rooms, sterile rooms, environmental simulation chambers, etc. should cover environmental control, operating procedures, equipment management, and safety to ensure the accuracy of test results and the safety of personnel and equipment. The following are key precautions:
1、 Environmental control
Temperature and Humidity Control
Maintain the temperature within the specified range (usually 18-26 ℃) and humidity of 40% -60% to avoid condensation or static electricity issues.
Use constant temperature and humidity equipment and regularly calibrate sensors.
Cleanliness maintenance
The test chamber needs to achieve the corresponding cleanliness level (such as ISO 5 or higher) and regularly detect particulate matter (PM0.3, PM0.5, etc.) in the air.
Equipped with high-efficiency filters (HEPA/ULPA) and regularly replaced or tested for differential pressure.
Pressure and airflow control
Maintain positive pressure inside the cabin (to prevent external pollution from entering), evenly distribute airflow, and avoid dead corners.
Regularly check the air supply system and wind speed to ensure that the air exchange rate meets the requirements (such as ≥ 20 times/hour).
2、 Personnel operation standards
Dressing and protection
Before entering the testing chamber, wear clean clothing, masks, gloves, shoe covers, etc. to avoid bringing in dust, fibers, or microorganisms.
Wearing jewelry, watches, and other easily detachable items is prohibited.
operating procedure
Gently move, reduce walking and large body movements, avoid disturbing airflow or raising dust.
Use specialized tools (such as anti-static tweezers, dust-free cloth) to come into contact with the sample or equipment.
personnel restrictions
Control the number of people in the cabin, only allow necessary personnel to enter, and record the entry and exit time and operation content.
3、 Equipment and Sample Management
Equipment cleaning and disinfection
The testing equipment needs to be thoroughly cleaned and disinfected to avoid cross contamination.
Precision instruments (such as sensors and optical equipment) need to be calibrated regularly to prevent error accumulation.
Sample processing
The sample needs to be pre processed (such as wiping, air drying, disinfection) to meet the testing requirements.
Volatile or corrosive samples should be handled in sealed containers to avoid contaminating the cabin environment.
waste disposal
The waste generated during the experiment (such as filter paper, reagent residue) should be immediately sealed and taken away, and residue is strictly prohibited.
Sharp objects (such as syringe needles) should be collected separately to prevent puncturing the clean bag.
4、 Safety and emergency measures
Fire and explosion prevention
It is prohibited to bring flammable and explosive materials (such as alcohol and hydrogen) into the testing chamber unless explosion-proof conditions are met.
Equipped with carbon dioxide fire extinguishers or inert gas fire extinguishing systems.
Electrical safety
Use explosion-proof electrical appliances or low-voltage equipment to avoid static electricity accumulation (which can be eliminated by grounding or ion fans).
Regularly check wires and sockets to prevent short circuits or electrical leakage.
emergency response
Develop emergency plans, clarify evacuation routes and equipment shutdown procedures in case of emergency.
Equipped with first aid kit, emergency shower device and other facilities.
5、 Daily maintenance and recording
Cleaning and disinfection
After daily testing, wipe the tabletop and equipment surface with a dust-free cloth, and regularly disinfect the cabin with ultraviolet radiation.
Check key components such as filters, differential pressure gauges, temperature and humidity sensors every week.
Record and Trace
Detailed records of the usage time, temperature and humidity, cleanliness, equipment status, and abnormal conditions of the test chamber.
Save monitoring data (such as particle counter logs) for at least 1 year for easy traceability and analysis.