

Aerosol Photometer Model 3991 – Advanced HEPA Filter Leak Detection & Validation Device
The Aerosol Photometer Model 3991 is an advanced digital instrument engineered for HEPA filter leak detection, ULPA integrity testing, and cleanroom validation. Designed for professionals in pharmaceutical cleanrooms, biosafety cabinets, and nuclear facilities, this high-performance aerosol photometer combines portability, precision, and durability in one.
Equipped with a vibrant 8.4-inch LCD touchscreen, this aerosol concentration detector features a built-in thermal printer, infrared scanning probe, lithium battery power, and intelligent GMP Three-Level Privileged Management. It provides unmatched traceability, large data storage, and stable testing in all controlled environments.
Ideal for air filtration system testing, pharmaceutical facility compliance, and biosafety cabinet performance validation, the Model 3991 is your go-to solution for industry-grade HEPA filter inspection.
Key Features
-
8.4-inch color touch screen with English & Chinese interface
-
Real-time data printing with built-in thermal printer
-
One-dimensional barcode scanning probe with auto traceability
-
Stores up to 100,000 sets of data with USB data export
-
GMP Three-Level Privileged Management with login permissions
-
Lithium battery-powered (up to 4.5 hours of continuous testing)
-
Built-in low-power mode for energy efficiency
-
Advanced noise suppression for stable aerosol concentration readings
-
Compatible with DOP, PAO, Ondina, PEG, and more
-
Compact and portable for easy field use
Data Accuracy | 0.0001–100.0%, 8.4-inch Touch LCD Screen
|
Dynamic Range | 0.0001 µg/L–600 µg/L
|
Accuracy | ±1% of readings (0.01–100%)
|
Repeatability | ±0.5% of readings (0.01–100%)
|
Flow Control | 1 cfm (28.3 L/min) ±5%
|
Zero Building | Automatic or Manual
|
Alarm Modes | Audible, Visual, Vibratory
|
Power-Saving Mode | Yes
|
Reporting Modes | Continuous, Summary, Monitoring
|
Printer | Built-in thermal printer
|
ID Encoding | Barcode scanning for data classification
|
Data Output | USB, Storage, Print
|
Data Storage Capacity | 100,000 sets
|
Communication | USB to PC, continuous scanning testing
|
Language Support | English
|
Reagents Supported | PAO, DOP, Ondina, Polyethylene Glycol, Corn Oil, Mineral Oil, Paraffin Oil
|
Sampling Port | Standard internal rectangular port
|
Shell Material | SUS304 Stainless Steel
|
Temperature & Humidity | 5–50°C, 5–95% RH (non-condensing
|
Storage Temperature | -20°C to 60°C (RH < 95%)
|
Power Supply | AC100–240V 50/60Hz or built-in lithium battery
|
Dimensions | Approx. 220 × 260 × 390 mm
|
Weight | 11.1 kg (unit), 1 kg (probe and accessories)
|
Certifications | NSF49, IEST, ISO14644
|
EN61010-1 | 2010
|
EN61326 | 2006
|
Aerosol Photometer Model 3991 – Advanced HEPA Filter Leak Detection & Validation Device
The Aerosol Photometer Model 3991 is an advanced digital instrument engineered for HEPA filter leak detection, ULPA integrity testing, and cleanroom validation. Designed for professionals in pharmaceutical cleanrooms, biosafety cabinets, and nuclear facilities, this high-performance aerosol photometer combines portability, precision, and durability in one.
Equipped with a vibrant 8.4-inch LCD touchscreen, this aerosol concentration detector features a built-in thermal printer, infrared scanning probe, lithium battery power, and intelligent GMP Three-Level Privileged Management. It provides unmatched traceability, large data storage, and stable testing in all controlled environments.
Ideal for air filtration system testing, pharmaceutical facility compliance, and biosafety cabinet performance validation, the Model 3991 is your go-to solution for industry-grade HEPA filter inspection.
Key Features
-
8.4-inch color touch screen with English & Chinese interface
-
Real-time data printing with built-in thermal printer
-
One-dimensional barcode scanning probe with auto traceability
-
Stores up to 100,000 sets of data with USB data export
-
GMP Three-Level Privileged Management with login permissions
-
Lithium battery-powered (up to 4.5 hours of continuous testing)
-
Built-in low-power mode for energy efficiency
-
Advanced noise suppression for stable aerosol concentration readings
-
Compatible with DOP, PAO, Ondina, PEG, and more
-
Compact and portable for easy field use
Data Accuracy | 0.0001–100.0%, 8.4-inch Touch LCD Screen
|
Dynamic Range | 0.0001 µg/L–600 µg/L
|
Accuracy | ±1% of readings (0.01–100%)
|
Repeatability | ±0.5% of readings (0.01–100%)
|
Flow Control | 1 cfm (28.3 L/min) ±5%
|
Zero Building | Automatic or Manual
|
Alarm Modes | Audible, Visual, Vibratory
|
Power-Saving Mode | Yes
|
Reporting Modes | Continuous, Summary, Monitoring
|
Printer | Built-in thermal printer
|
ID Encoding | Barcode scanning for data classification
|
Data Output | USB, Storage, Print
|
Data Storage Capacity | 100,000 sets
|
Communication | USB to PC, continuous scanning testing
|
Language Support | English
|
Reagents Supported | PAO, DOP, Ondina, Polyethylene Glycol, Corn Oil, Mineral Oil, Paraffin Oil
|
Sampling Port | Standard internal rectangular port
|
Shell Material | SUS304 Stainless Steel
|
Temperature & Humidity | 5–50°C, 5–95% RH (non-condensing
|
Storage Temperature | -20°C to 60°C (RH < 95%)
|
Power Supply | AC100–240V 50/60Hz or built-in lithium battery
|
Dimensions | Approx. 220 × 260 × 390 mm
|
Weight | 11.1 kg (unit), 1 kg (probe and accessories)
|
Certifications | NSF49, IEST, ISO14644
|
EN61010-1 | 2010
|
EN61326 | 2006
|
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