Working Principle
The core of the weighing booth lies in its vertical laminar flow technology. Using a top-mounted high-efficiency filter, it delivers pre-filtered air to the work area in a uniform, stable, vertical airflow, forming a unidirectional clean air curtain.
Simultaneously, the negative pressure exhaust system at the bottom quickly captures and filters out dust and particles generated during the weighing process, achieving the following effects:
Preventing dust leakage and protecting operators;
Avoiding cross-contamination and ensuring the accuracy of experimental data;
Maintaining a constant cleanliness level in the weighing area and preventing airflow disturbances from affecting weighing results.
Core Technology Analysis
Triple Filtration System
This typically includes a three-stage purification structure consisting of pre-filters, medium-efficiency filters, and high-efficiency filters, ensuring that the supplied air meets ISO Class 5 or higher cleanliness standards.
Intelligent Airflow Control
Utilizing differential pressure sensors and a variable frequency fan, the system automatically adjusts the airflow speed to maintain a constant downward velocity (typically 0.3~0.45 m/s). It automatically compensates for airflow even as the filter becomes clogged.
Modular Design
The weighing booth features a modular construction, which facilitates maintenance, filter replacement, and customization of the work area dimensions.
Low Noise and Energy Saving
The system's duct design and noise reduction structure are optimized, ensuring performance while maintaining operating noise levels below 65 dB, which enhances laboratory comfort.
Applications
In these environments, the weighing booth not only prevents the spread of harmful dust but also ensures that weighing operations are conducted in a clean and stable microenvironment, thereby improving data reliability.
Pharmaceutical Industry
Weighing and dispensing of active pharmaceutical ingredients and powders;
Chemical Laboratories
Preparation of high-precision samples and weighing of reaction reagents;
Food Testing and Biological Research
Weighing and contamination control of trace samples.
Usage and Maintenance Recommendations
Regularly check and replace filters to prevent reduced cleanliness due to insufficient airflow;
Test airflow and differential pressure before and after each use;
Clean work area surfaces to avoid powder residue;
It is recommended that a professional conduct annual performance validation (IQ/OQ).
Conclusion
Weighing booth plays an irreplaceable role in ensuring experimental safety and the accuracy of results. With the continuous improvement of cleanliness and safety standards in the pharmaceutical, biological, and chemical industries, they are gradually becoming standard equipment in high-end laboratories. Choosing high-performance, intelligent equipment not only strongly guarantees experimental results but also carefully protects the health of laboratory personnel and the quality of enterprise production.
