Pipeline free clean gas type medicine cabinetIt is a laboratory equipment that integrates air purification and secure storage functions, mainly used for managing volatile, toxic, harmful, or odorous drugs, without the need to connect external exhaust ducts. Its core role is reflected in three dimensions: secure storage, environmental purification, and convenient operation. The specific analysis is as follows:
Core function: Dual guarantee of secure storage and pollution control
1. Safety isolation of volatile drugs
Mechanism of action: Through a fully enclosed cabinet and negative pressure sealing design, volatile drugs (such as organic solvents, acidic and alkaline gases) are confined inside the cabinet to prevent leakage into the laboratory environment.
Typical scenario: When storing volatile organic reagents such as ether and chloroform, negative pressure inside the cabinet can prevent gas diffusion and reduce the risk of inhalation by personnel.
Data support: The concentration of volatile organic compounds (VOCs) inside the cabinet can be controlled at ≤ 5ppm (far below the OSHA standard of 20ppm), reducing the risk of leakage by 80%.
2. Activated carbon adsorption purification
Technical principle: Efficient activated carbon filtration modules are integrated on the top or back of the cabinet to remove harmful gases from the air inside the cabinet through physical adsorption.
Primary filtration: intercepting dust and particulate matter (filtration efficiency ≥ 95%).
Deep purification: The activated carbon layer adsorbs volatile organic compounds (VOCs), acidic gases (such as HCl), and alkaline gases (such as NH3), with an adsorption capacity of 10% -15% (by weight).
Effect verification: Through third-party testing, the adsorption rate of common solvents such as toluene and xylene exceeds 90%, and the treated air meets the GBZ 2.1-2019 "Occupational Exposure Limits for Hazardous Factors in the Workplace".
3. Intelligent air volume regulation
Adaptive control: Built in sensors monitor the gas concentration inside the cabinet in real time, automatically adjust the fan speed (usually 50-300m ³/h), and ensure a balance between purification efficiency and energy consumption.
Low concentration mode: When the gas concentration in the cabinet is ≤ 1ppm, the fan runs at a low speed of 50m ³/h, saving 30% energy.
High concentration mode: When the concentration is ≥ 5ppm, the fan accelerates to 300m ³/h to rapidly dilute the pollutant gas.
User benefits: Compared to traditional exhaust cabinets (fixed air volume), annual power consumption is reduced by 40% -60%.