Airborne Dust and Bacteria Sampler with Isokinetic Sampling for Cleanroom Monitoring

In pharmaceutical GMP workshops, hospital operating rooms, semiconductor cleanrooms, and other scenarios, the concentration of planktonic microorganisms is the core indicator for measuring environmental cleanliness. The traditional settlement detection method has problems such as low sampling efficiency, data lag, and significant human interference, making it difficult to meet the dynamic monitoring needs of modern clean spaces. In this context, the airborne dust and bacteria sampler has become an important analytical tool in the field of environmental microbial monitoring due to its high efficiency, accuracy, and portability.

Technical Principles: Scientific Design from Aerodynamics to Microbial Capture

1. Hardware architecture: Analysis based on isokinetic sampling theory

The instrument adopts a porous suction design and completes sampling through the following process:

Isokinetic sampling: The sampling port wind speed should be consistent with the clean room wind speed (0.3-0.5m/s) to avoid microbial escape caused by airflow disturbance

Inertial impact: Carrier air passes through micropores (diameter 0.25 μ m) at high speed, capturing microorganisms on the surface of agar culture dishes

Kinetic energy rehydration: After collection, the culture dish is incubated at 37 ℃ to restore microbial activity and form visible colonies

2. Software System: Intelligent Parameter Control and Data Management

The supporting system realizes three core functions:

Sampling control: Supports 1-6000L adjustable sampling volume, LCD real-time display of flow/time parameters

Data storage: can store 1000 sets of historical records, supports switching between Chinese and English

Output module: Built in thermal printer+USB data export, meeting GMP traceability requirements

Industry pain points and solutions

1. Limitations of traditional detection methods

Settlement method: relying on natural gravity settlement, sampling efficiency<70%, detection period>48 hours

Centrifugal sampler: high-speed rotation destroys microbial activity, resulting in lower results

Manual recording: Paper ledgers are prone to loss and cannot meet FDA/EU GMP data integrity requirements

2. Innovative breakthroughs in planktonic samplers

Dynamic monitoring: Real time reflection of changes in clean room microbial concentration, supporting online trend analysis

Activity retention: Inertial impact method maintains microbial integrity, and the detection results are closer to the true values

Compliance design: electronic signature+audit trail function, compliant with 21 CFR Part 11 specifications

As a professional equipment for clean environment monitoring, the airborne dust and bacteria sampler provides powerful environmental microbial monitoring methods for various industries through efficient, accurate, and reliable sampling techniques. Its portability, intelligence, and compliance meet the strict requirements of modern industries for clean environment monitoring, making it an important tool for quality management. With the continuous advancement of technology and the continuous expansion of application scenarios, airborne dust and bacteria samplers will play an important role in a wider range of fields.

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