Product Description
The working principle of the Medical Negative Pressure Weighing Hood is based on negative pressure technology. By creating a negative pressure environment isolated from the outside, it prevents dust and particulates from escaping. The basic workflow is as follows:
The operator opens the upper hood and pours the material to be weighed into it.
After closing the hood, the system uses a fan to extract air from inside, forming a negative pressure state.
Air flows from outside to inside, collecting dust and particulates into the lower hood, which are then processed via a dust collector connected through ducts.
This design protects operators from harmful substances and prevents cross-contamination between materials.
Product Specifications
|
Model |
GF-1300 |
GF-1700 |
GF-2400 |
|
External Dimensions (LWH, mm) |
130013002300 |
170017002300 |
240018002300 |
|
Work Area Dimensions (LWH, mm) |
12008002000 |
160012002000 |
230013002000 |
|
Cleanliness Level |
Class 1000 @ ≥0.5 μm (US Federal Standard 209E) |
Class 1000 |
Class 1000 |
|
Average Air Velocity (m/s) |
0.3–0.6 (adjustable) |
0.3–0.6 |
0.3–0.6 |
|
Noise (dB) |
≤68 |
≤68 |
≤68 |
|
Vibration Half Peak (μm) |
≤5 |
≤5 |
≤5 |
|
Illumination (Lx) |
≥300 |
≥300 |
≥300 |
|
Power Supply |
AC/220V/50Hz |
AC/220V/50Hz |
AC/220V/50Hz |
|
Supply Air Volume (m³/h) |
2500 (adjustable) |
3600 (adjustable) |
5000 (adjustable) |
|
Exhaust Air Volume (m³/h) |
750 (adjustable) |
1080 (adjustable) |
1500 (adjustable) |
|
Total Air Volume (m³/h) |
2500 |
3600 |
5000 |
|
Maximum Power (kW) |
≤0.75 |
≤1.5 |
≤1.5 |
|
Weight (kg) |
250 |
300 |
400 |
|
Three-Level Filtration System |
G4/F7/H14 |
G4/F7/H14 |
G4/F7/H14 |
Note: Specifications are for reference only. Custom designs are available according to customer requirements.
Product Features
High-Efficiency Filtration & Safe Environment:
Equipped with a multi-stage filtration system (pre-filter, medium filter, HEPA filter), achieving ≥99.99% efficiency for particles ≥0.3 μm. The adjustable negative pressure (0.5–30 Pa) generates unidirectional airflow to prevent dust diffusion, ensuring a safe operating environment.
Intelligent Control & Convenient Operation:
Integrated PLC system monitors airflow and pressure in real time, with audible and visual alarms for abnormalities. The user interface is simple and password-protected. Rounded interior design eliminates dead corners, easy to clean and maintain, compliant with GMP standards.
Flexible Design & Wide Applicability:
Modular structure, stainless steel construction, flexible installation suitable for various sites. Applicable to pharmaceutical, chemical, and food industries for high-precision weighing and reagent handling while maintaining safety and efficiency.
Product Applications
Pharmaceutical Industry: Ensures drug purity for powder material weighing and packaging. Filters fine particles, prevents cross-contamination, complies with GMP standards. The negative pressure environment isolates harmful substances, improving production efficiency and drug safety.
Microbiological Research: Supports sterile operations in biosafety laboratories. The negative pressure hood prevents microbial spread, maintaining a sterile environment for accurate experiments and laboratory safety.
Food Processing: Controls dust and contamination for spices, additives, and other materials. Prevents airborne particles and cross-contamination, complying with food hygiene standards and ensuring product purity.
Chemical Industry: Provides protection against hazardous substances. The negative pressure environment prevents dust and gas diffusion. Corrosion-resistant design suits harsh conditions, ensuring safe operations.
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