Aerosol photometer MODEL3991- LEFILTER Life Science Project Department

Lefilter2026-01-31 BACK TO LIST

GTI 3991 is a technologically advanced and scientifically designed light scattering linear digital aerosol photometer that subverts traditional design. It is the best testing instrument necessary for detecting the integrity or leakage test of high-efficiency filters.


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                          Aerosol photometer MODEL3991👆


Equipment Overview

Compact structure, easy to carry, using an 8.4-inch true color touch screen display with a friendly interface between Chinese and English, and equipped with aerosol noise suppression function, resulting in more stable test data. The instrument is equipped with three-level permission management, which can set roles and allocate usage permissions, and generate log reports. Equipped with a built-in thermal printer and long-lasting thermal printing paper, real-time printing of test data can be completed on the testing site.


performance advantage

1. Intelligent settings

The product adopts an 8.4-inch true color touch screen display, with switching between Chinese and English, rich options, reasonable 

design, and easy operation. The options including testing, settings, user, log, data, suppression coefficient, alarm limit, report mode, 

date and time can all be intelligently set.


2. Multi functional scanning probe

The scanning probe is connected to the host through a 4m long pipeline, and various options can be set even when far away from 

the host. The 1.8-inch true color display screen synchronizes with the host for display. The scanning probe has one-dimensional 

code scanning function, automatic data classification and traceability.


3. Third level permission management

The instrument has built-in GMP three-level management permissions, allowing for the free setting of 100 roles and allocation 

of operational permissions. And generate log reports for the operation.


4. Built in rechargeable lithium battery

Equipped with a large capacity rechargeable lithium battery, it can be used continuously for 4.5 hours. At the same time, it is 

equipped with a low-power mode to reduce instrument power consumption when not in use for testing. Improve battery usage time.


5. Built in thermal printing

Equipped with a built-in thermal printer and long-lasting thermal printing paper for real-time printing.


Application field

At present, the main application field is high-efficiency filter validation; Medical operating room, clean room; Nuclear energy 

and fuel; Biosafety cabinets and clean workbenches; Pharmaceutical and electronics industries; Food processing and scientific experiments.


As an important component of Lifetech's 150 project departments, the Life Science Project Department will continue to 

provide professional support for industries such as biotechnology and pharmaceutical manufacturing, and contribute to 

building a healthier, safer, and more sustainable society.




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