Language ▼

Chinese

English

HOME
ABOUT
- LabStone
- Honor
- Certification
- Partner
- Customer
PRODUCTS
APPLICATIONS
- Pharmacy
- Food
- Packing
- Petroleum
- Daily tool
- Material
- Adhesive
SERVICE
NEWS
CONTACT
- Contact Us
- Join
- Message

Key: test item, instrument name, total nonvolatile migration, gravimeter, moisture permeameter

Product

Gas Permeation Analyzer-GTR Tester-Differential Pressure Method

PSG-11 /31 -G
Focusing on packaging and material testing technology, we are committed to quality control in industries such as healthcare, pharmaceuticals, food, packaging, textiles, and new materials. Our products are widely used in enterprises, testing institutions, universities, and research institutes.

Category:

Permeation Analyzer

Gas/Oxygen Permeation Analyzer

GTR Tester- Differential Pressure Method

Ultra-High Precision Differential Pressure Gas Permeability Tester

For High Barrier Films, Pharmaceutical Packaging and Specialty Materials

Overview

The LabStone PSG Series Gas Permeability Tester is an ultra-high precision differential pressure gas transmission analysis system specifically developed for testing high-barrier materials, pharmaceutical packaging, specialty films and advanced functional materials.

Featuring dynamic leakage compensation technology, ultra-low vacuum measurement capability and multiple specimen sizes, the PSG Series provides highly accurate gas permeability evaluation for oxygen, nitrogen, carbon dioxide and even toxic gases.

The system is particularly suitable for applications requiring extremely low permeability detection and advanced material characterization.

Function

Ultra-high precision and multi-size gas permeability performance testing: gas permeability rate (amount), permeability coefficient, dissolution coefficient, diffusion coefficient.

Applicable to the permeability performance testing of O2, CO2, N2, and other gases for materials such as plastic films, composite films, high barrier materials, sheets, metal foils, rubber, etc. It can also measure the permeability of toxic gases.

Working Principle

The PSG Series operates according to the Differential Pressure Method.

A specimen is mounted between a high-pressure chamber and a low-pressure chamber.

Both chambers are evacuated to a high vacuum level.

The test gas is then introduced into the upstream chamber while maintaining a constant pressure differential across the specimen.

Gas molecules permeate through the material and enter the downstream chamber.

Highly sensitive vacuum sensors continuously monitor pressure changes.

The software automatically calculates:

Gas Transmission Rate (GTR)
Permeability Coefficient
Diffusion Coefficient
Solubility Coefficient
Permeation Amount

This method provides highly accurate permeability characterization of medium- and ultra-high-barrier materials.

Compliant Standards:

ASTM D1434
ISO 15105-1
ISO 2556
JIS K7126-1

Key Features

Dynamic Leakage Compensation Technology

Unlike conventional permeability testers, the PSG Series continuously evaluates system background leakage and specimen installation leakage.

Benefits include:

Improved low-permeability accuracy
Reduced background noise
Better repeatability
Higher confidence in ultra-low transmission measurements

This is one of the most important features for high-barrier testing.

Ultra-High Precision Vacuum Measurement

Features:

Vacuum error: 0.01 Pa
Ultimate vacuum: <10 Pa

allowing highly sensitive detection of gas transmission.

Dual Test Area Design

Supports:

Large Area Testing

38.48 cm²

Suitable for standard permeability testing.

Small Area Testing

7 cm²

Ideal for:

Limited sample quantities
Finished products
Small research specimens
Expensive materials

Toxic Gas Testing Capability

Unlike many standard permeability testers, the PSG Series supports testing of toxic gases.

Integrated gas purging technology:

Improves operator safety
Prevents gas leakage
Reduces gas consumption

This expands application possibilities beyond conventional packaging testing.

Pneumatic Specimen Clamping

Provides:

Fast specimen installation
Consistent sealing pressure
Reduced operator influence

especially important for low-permeability materials.

High-Performance Temperature Control

Temperature range: 15°C∼50°C

Temperature accuracy: ±0.2°C

enabling highly stable testing conditions.

Independent Sensor Architecture

PSG-11-G

Single test cell
One vacuum sensor

Ideal for research and specialized testing.

PSG-33-G

Three independent test cells
Three independent vacuum sensors

Provides:

Improved chamber consistency
Higher throughput
Better testing efficiency

Optional Humidity Control

Optional humidity control unit enables advanced testing under controlled humidity conditions for pharmaceutical and specialty applications.

GMP Data Integrity Support

Optional GMP Computerized System supports:

Audit trails
Electronic records
User access control
Permission management
Data integrity compliance

Suitable for regulated laboratories.

Technical Specifications:

Parameter	Value	Parameter	Value
Sample Quantity	PSG-11-G: 1, PSG-33-G: 3	Vaccum Sensor Quantity	PSG-11-G: 1, PSG-33-G: 3
Test Area	Large Sample: 38.48 cm², Small Sample: 7 cm²	Sample Thickness	≤3 mm
Measurement Range (cm³/m²•24h•0.1Mpa)	Large Sample: 0.01 ~ 25,000 Small Sample: 0.05 ~ 100,000	Measurement Error (cm³/m²•24h•0.1Mpa)	Large Sample: 0.01 Smal Sample l: 0.05
Vaccum Error	0.01 Pa	Vaccum Range	133.3 Pa
Lowest Vaccum	<10 Pa	Vaccum Efficiency	Within 10 minutes, below 27 Pa
Temp Range	15 ℃ to 50 ℃	Temp Error	±0.2℃
Calibration Method	Reference Film
Test Gas	CO₂,O₂,N₂, H₂, or toxic gases	Test Pressure	0.05～0.15 MPa
Gas Connector	φ6	Gas Supply Pressure	0.2～0.8 MPa
Power Supply	AC220V /110V ;50/60Hz	Power Consumption	<1500 W
Mainframe Size	720×475×580mm(L×B×H)	Mainframe Weight	PSG-11-G:68 Kg, PSG-33-G:80 Kg

Standard Configuration: Testing mainframe, testing software, vacuum pump, computer, vacuum bellows, gas cylinder pressure reducing valve and fittings, sampler, sealing grease.

Optional Accessories: Container testing fixture, humidity control unit.

Self-supplied: Test gas and gas cylinders.

Why Ultra-Low Gas Permeability Testing Matters

Modern packaging and industrial materials increasingly require extremely low gas transmission rates.

Examples include:

Pharmaceutical Packaging

High-barrier packaging protects oxygen-sensitive and moisture-sensitive drugs from degradation.

Medical Device Packaging

Maintains sterile barrier integrity during storage and transportation.

Lithium Battery and Electronics Materials

Reduces oxygen and gas penetration that may affect product reliability.

High-Barrier Food Packaging

Extends shelf life by minimizing oxygen ingress and flavor loss.

Aerospace and Industrial Materials

Requires precise evaluation of gas diffusion and permeability behavior.

As barrier technology improves, conventional permeability testing systems often struggle to detect extremely low transmission rates.

The PSG Series is specifically designed to address these challenges.

Application Industries

Pharmaceutical Packaging

Suitable for:

Blister packaging
Pharmaceutical laminates
High-barrier medical films
Drug packaging materials

Supports packaging qualification and stability studies.

High-Barrier Packaging Industry

Applicable to:

EVOH structures
PVDC films
Aluminum-coated films
Multi-layer laminates
Retort packaging materials

Specialty Functional Films

Used for:

Industrial membranes
Protective coatings
Barrier composites
Advanced polymer structures

Electronic and Battery Materials

Suitable for:

Flexible electronics
Battery packaging materials
OLED barrier films
Semiconductor packaging materials

Research and Academic Institutions

Widely used for:

Gas diffusion studies
Material permeability research
Barrier mechanism investigations
New material development

Why Choose PSG Instead of a Standard Gas Permeability Tester?

The PSG Series is designed for laboratories requiring:

Ultra-low permeability measurement
High-barrier material testing
Toxic gas testing
Small specimen testing
Research-grade permeability analysis

where conventional permeability testers may not provide sufficient sensitivity.

Frequently Asked Questions (FAQ)

What is the difference between PSG and standard differential pressure gas permeability testers?

The PSG Series offers dynamic leakage compensation, higher vacuum accuracy, toxic gas testing capability and small-area specimen testing.

Can toxic gases be tested?

Yes. The PSG Series is designed to safely test toxic gases using an integrated purging system.

Why is dynamic leakage compensation important?

It reduces the influence of background leakage and specimen installation leakage, improving measurement accuracy for ultra-high-barrier materials.

Can very small samples be tested?

Yes. The optional 7 cm² specimen area is ideal for limited or expensive materials.

Is this instrument suitable for pharmaceutical packaging?

Yes. It is particularly suitable for high-barrier pharmaceutical packaging validation and research.

What gases can be tested?

Oxygen (O₂)
Nitrogen (N₂)
Carbon dioxide (CO₂)
Toxic gases
Other specialty gases

What is the lowest measurable permeability level?

The instrument is optimized for ultra-low gas permeability applications through its high-vacuum design and leakage compensation technology.

Does this product have other names?

English

Ultra High Precision Gas Permeability Tester
Differential Pressure Gas Permeability Analyzer
High Barrier Gas Transmission Rate Tester
Gas Permeation Analyzer
Ultra Low Permeability Tester
Packaging Gas Barrier Tester
Pharmaceutical Gas Permeability Tester

Spanish

Analizador de Permeabilidad a Gases de Alta Precisión

Portuguese

Testador de Permeabilidade a Gases de Alta Precisão

French

Analyseur de Perméabilité aux Gaz Haute Précision

German

Hochpräzises Gasdurchlässigkeitsprüfgerät

Japanese

高精度差圧法ガス透過率試験機

Product Function：
Ultra-high precision and multi-size gas permeability performance testing: gas permeability rate (amount), permeability coefficient, dissolution coefficient, diffusion coefficient.
Applicable to the permeability performance testing of O2, CO2, N2, and other gases for materials such as plastic films, composite films, high barrier materials, sheets, metal foils, rubber, etc. It can also measure the permeability of toxic gases.
Operating Principle:
Differential pressure method. Place the pre-set sample between the high-pressure chamber and the low-pressure chamber, seal tightly, and then simultaneously evacuate both the high and low-pressure chambers. After evacuating for a certain time and achieving the required vacuum level, close the low-pressure chamber, introduce the test gas into the high-pressure chamber, and adjust the pressure in the high-pressure chamber to maintain a constant pressure difference on both sides of the sample. Under the action of the pressure difference, gas permeates from the high-pressure side to the low-pressure side of the sample. Accurately measure the pressure change in the low-pressure chamber and calculate the gas permeability parameters of the sample.
Compliance with Standards:
ASTM D1434, ISO 2556, ISO 15105-1, Chinese Pharmacopoeia (Part Four) - Method for Determination of Gas Permeation, YBB 00082003, GB/T 1038, JIS K7126-A.
Technical Features：
- High-precision vacuum sensors and pressure sensors for high testing accuracy.
- Semiconductor cooling and heating temperature control, parallel design for high reliability.
- Multiple sample specifications; small sample testing (Φ4 cm), suitable for finished products.
- Sample installation: pneumatic sample clamping, convenient for sample loading.
- Dynamic leakage measurement technology to eliminate sample installation and system background leaks, ensuring ultra-high precision testing.
- Toxic gas purging device to prevent leakage of test gas and reduce gas consumption.
- Precision valve and pipeline components, thorough sealing, achieving high-speed vacuum, complete desorption, and reducing testing errors.
- Precision pressure control, maintaining a wide range of pressure differences between the high and low-pressure chambers.
- Intelligent automation: self-check at startup to avoid testing in a faulty state; one-key startup, fully automatic execution of tests.
- Data recording: graphical, recording throughout the process with all elements, and data not lost in case of power outage.
- Data security: optional "GMP Computerized System" module with user management, permission management, audit trail, and other functions.
- Operating environment: Indoor. No need for a constant temperature and humidity environment (reducing operating costs), and testing data are not affected by environmental temperature and humidity.

Technical Specifications:

Parameter	Value	Parameter	Value
Sample Quantity	PSG-11-G: 1 PSG-33-G: 3	Vaccum Sensor Quantity	PSG-11-G: 1 PSG-33-G: 3
Test Area	Large Sample: 38.48 cm² Small Sample: 7 cm²	Sample Thickness	≤3 mm
Measurement Range (cm³/m²•24h•0.1Mpa)	Large Sample: 0.01 ~ 25,000 Small Sample: 0.05 ~ 100,000	Measurement Error (cm³/m²•24h•0.1Mpa)	Large Sample: 0.01 Smal Sample l: 0.05
Vaccum Error	0.01 Pa	Vaccum Range	133.3 Pa
Lowest Vaccum	<10 Pa	Vaccum Efficiency	Within 10 minutes, below 27 Pa
Temperature Range	15 ℃～50 ℃	Temperature Error	±0.2℃
Calibration Method	Reference Film
Test Gas	CO2, N2, CO2, and toxic gases	Test Pressure	0.05～0.15 MPa
Gas Connector	φ6	Gas Supply Pressure	0.2～0.8 MPa
Power Supply	AC220V /110V ;50/60Hz	Power Consumption	<1500 W
Mainframe Size	720×475×580mm(L×B×H)	Mainframe Weight	PSG-11-G:68 Kg PSG-33-G:80 Kg

Standard Configuration:     Testing mainframe, testing software, vacuum pump, computer, vacuum bellows, gas cylinder pressure reducing valve and fittings, sampler, sealing grease.
Optional Accessories:   Container testing fixture, humidity control unit.
Self-supplied:   Test gas and gas cylinders.

Keywords:

Water Vapor Transmission Rate Analyzer - Infrared Method

Water Vapor Transmission Rate Analyzer - Cup Method