Features Accuracy Measurement: Utilizing sophisticated optical scattering technology, this air quality detector provides precise evaluations of airborne particle counts and mass across multiple sizes per unit volume, delivering trustworthy information on environmental dust levels Multifunctional Design: Engineered for versatility, this compact air quality tester boasts high accuracy, rapid detection, portability, and user-friendly operation, catering to a broad range of monitoring needs Real-Time Monitoring: Capable of simultaneously detecting dust particles across six different sizes in a single sample, this device offers real-time monitoring and data logging, facilitating immediate analysis and evaluation for environmental research and testing Durable Construction: Encased in a robust ABS plastic, the detector is designed to withstand cold temperatures, resist wear, and maintain structural integrity under mechanical stress, ensuring longevity in a myriad of operating conditions Broad Utility: With its advanced capabilities, this air quality monitoring instrument is an essential tool for various industries, including microelectronics, medical and pharmaceutical, biotechnology, food safety, cosmetics, accuracy engineering, and specialty chemicals, supporting quality control and environmental safety. Specification: Item Type: Air Quality Monitor Material: ABS Particle Detection Range: 0.3μm to 10μm Particle Size: 0.3μm, 0.5μm, 1.0μm, 3.0μm, 5.0μm, 10μm Counting Efficiency: 50% at 0.3μm, 100% at >0.5μm (in accordance with ISO 21501 4 and JIS) Particle Size Resolution: <15% at 0.5μm (in accordance with ISO21501 4) Sampling Flow Rate: 2.83L/min (0.1ft³) Tolerance: 5% (2,000,000Particles/ft³) Battery: Built in lithium ion battery 1 x 3.7V 2000mAh (Included) Operating Temperature: 0°Cd to 50°C Operating Humidity: 10%RH to 90%RH No frost condensation Storage Temperature: -20°C to 60°C Storage Humidity: 0 to 95%RH no frost condensation  Package List: 1 x Air Quality Monitor 1 x USB Cable 1 x Instruction Manual 1 x Storage Box Note: 1. It is forbidden to extract gases containing oil or corrosive substances, or to measure a mixture of gases that may produce a reaction (e.g. hydrogen and oxygen). These gases may also produce an explosion in the counter. 2. It should be used in a clean environment in order to prevent damage to the laser sensor. 3. It is forbidden to disassemble the instrument or to throw it into fire. 4. Prevent the instrument from violent vibrations and drops. 5. Do not allow liquids to flow inside the instrument. 6. When the machine enters a different ambient temperature, especially when the low temperature environment enters a high temperature environment, water vapour may condense on the instrument and the machine must be allowed to stabilise for half an hour before powering on to measure the values. Water, solutions or other liquids should not be allowed to enter through the sampling air inlet. Package List 1 x Air Quality Monitor 1 x USB Cable 1 x Instruction Manual 1 x Storage Box