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Differential and Equal Pressure Method Gas Permeability Tester

Differential and Equal Pressure Method Gas Permeability Tester

2000.00 - 20000.00 USD ($)/Set

Product Details:

  • Temperature 5-95 Celsius (oC)
  • Power Supply AC 220V 50Hz
  • Number of Specimens 3
  • Machine Weight 85kg Kilograms (kg)
  • Control Mode PC Controlled
  • Click to View more

Price And Quantity

  • 2000.00 - 20000.00 USD ($)/Set
  • 1 Set

Product Specifications

  • PC Controlled
  • 85kg Kilograms (kg)
  • AC 220V 50Hz
  • 3
  • 5-95 Celsius (oC)

Trade Information

  • 10 Set Per Month
  • 7 Days
  • Veneer Case
  • All India
  • ISO 9001, CE

Product Description

Differential and Equal Pressure Method Gas Permeability Tester

DM2/330 Equal and Differential Pressure Method Gas Permeability Tester is grounded on variance and equal pressure technique, and is professionally appropriate to the gas permeability examination of packages and films. It is planned for examination of gas solubility coefficient, transmission rate, permeability coefficient and diffusion coefficient of laminated films, plastic films, high barrier material, sheets, back-sheets and aluminum foils and also pouches, bottles, boxes and jars ended of plastics, rubber, glass, paper, metal and other resources.


Exclusive patent plan; one tester can do tests employing both differential and equal pressure approaches.

  • Equal Pressure Method: Lock the pre-conditioned example amid the upper and the lower compartments. High clean oxygen or air streams in one side of the film (higher chamber); whereas high pure nitrogen streams in the added side of the film (below chamber). Oxygen molecule permits via the film into the more pure nitrogen side (lower compartment), and is occupied to the feeler by the streaming nitrogen. By examining the absorption of oxygen noticed by the device, the oxygen transmission degree and other limits can be gotten. For packages, nitrogen streams interior the packet, and air or tall pure oxygen flows outdoor.
  • Differential Method: Lock the pre-conditioned example amid the upper compartment and the lower compartment. Empty the low-pressure compartment (lower compartment) and then the entire organization. When the stated mark of vacuum is touched, shut down the lower test compartment and fodder test gas of convinced pressure to the high pressure compartment (upper test compartment). Guarantee that a continuous difference pressure (adaptable) is upheld amid the two sides of the sample. Hence, under the purpose of pressure incline, the test gas infuses from the high-pressure sideways to the low-pressure sideways. By examining the pressure fluctuations in lower compartment, several barrier limits can be got.
  • Double Method: Lock the preconditioned example amid the upper and lower compartments. Equal pressure method test takings first; and then, follows the differential method.


This test tool imitates to the following standards:

ISO 15105-2, ISO 15105-1, ASTM D3985, ISO 2556, ASTM F2622, ASTM F1927, ASTM F1307, ASTM D1434, JIS K7126-2, JIS K7126-1, GB/T 19789, YBB 00082003, GB/T 1038

Basic Applications


With plastic films, paper-plastic composite films, plastic composite films, aluminized films, coextruded films, aluminum foil composite films, aluminum foils, and several others


Including several sorts of rubber and building materials, engineering plastics, e.g. PVC, PP, and PVDC


Together with plastic, paper, rubber, glass and metal packages, paper-plastic composite, e.g. peanut oil packages, Coke bottles, materials, metal three-piece cans, vacuum bags, plastic packages for soft tubes for toothpaste, cosmetic, yogurt cups and jelly.

Extended Applications

Package Caps

Examine seal presentation of dissimilar package caps

Solar Back-Sheets

With solar back-sheets

Plastic Pipes

Counting numerous sorts of pipes, e.g. PPR

Blister Packs

Examine oxygen transmission rate of the entire blister packs

Fuel Tanks of Cars

Plastic fuel tanks are extensively employed in cars for its buffering vibration, light weight, and convenient molding characteristics. But then again its fuel penetrability is the most vital feature, this instrument can be utilized to test penetrability of plastic fuel tanks

Battery Plastic Shell

Battery electrolyte is prevented by the plastic shell from outdoor atmosphere. Battery service life is straight dependent on its oxygen penetrability. This tool can be used to check oxygen transmission degree of battery plastic shell

Red Wine Bottles

Examine oxygen transmission speed of red wine bottles

Contact Lenses

Examine oxygen transmission speed of contact lenses in procedure situation

Biodegradable Films

The oxygen transmission speed is a vital issue that touches biodegradable film features and additional development

Soft Plastic Infusion Bottles

Oxygen is the main factor that leads injection to deterioration. It will be very important to lower oxygen content of infusion bottles

Warm Paste Packages

Once affected with oxygen previously usage, warm pastes will drop effectiveness, they should be positioned in vacuum packets. So, it is essential to examine the oxygen transmission degree of warm pastes parcels.

Paper and Paper Board

Counting paper and paper board, for example aluminum foil paper for  cigarette packages

Paint Films

Examine gas penetrability of numerous sorts of paint films

Flexible Plastic Infusion Bottles

Examine oxygen penetrability of elastic plastic infusion bottles

Warm Paste Packaging Bags

Examine oxygen penetrability of the packing bags of warm pastes

Several Gases

Examine the penetrability of numerous kinds of gases, e.g. CO2, O2, N2, Air and He

Inflammable, Explosive Gases

Examine the penetrability of flammable and volatile gases

Substances for Aerospace Usage

This tool can examine the Helium penetrability of airship gas bags

Glass Fiber Cloth and Paper

Counting paper materials and glass fiber cloth, e.g. ptfe welding cloth, ptfe paint cloth, and ptfe silicon rubber cloth

Soft Tube Substances for Cosmetics

Counting numerous kinds of aluminum-plastic tubes, cosmetic tubes, and toothpaste tubes

Rubber Sheeting

Comprising numerous kinds of rubber sheeting, e.g. car tires


  • Equal pressure method and Differential pressure method joint in one element to cater to separate testing requirements
  • Diffusion coefficient and Solubility coefficient could be found at one operation
  • Three different or equivalent samples can be examined separately with six sovereign test consequences by two test approaches at one operation
  • Labthink patented project of diffusion compartment porous support plate
  • This tool comes with three test styles: standard, proportional, and manual mode
  • Extensive range and high-accuracy of involuntary temperature controller to assist numerous mixtures of non-standard test circumstances
  • Test results could be effortlessly got even at dangerous circumstance by data fitting purpose, which could labor at any temperature
  • The tool could be utilized to test inflammable, poisonous, and explosive gases (customization essential)
  • The tool is regulated by computer and test procedure is automatic
  • Orientation film for reckless calibration to safeguard accurate and worldwide test data
  • Standard RS232 port for suitable data transfer
  • Supports LystemTM Lab Data Sharing Scheme for unchanging organization of test outcomes and test reports

Standard Configurations

Temperature Controller, Mainframe, Precision Nitrogen Pressure Regulator, Professional Software, Round Sample Cutter, Precision Oxygen Pressure Regulator, Communication Cable, Fast Quantitative Filter Paper and Vacuum Pump (Imported)

Optional Parts

Attachment for Package Test, Blades of Sample Cutter, Fixture for Small Specimen Test, Vacuum Pump Oil, Vacuum Grease, and Fast Quantitative Filter Paper


  • The gas source ports of the tool are 8 mm PU tubing and 1/8 inch copper tubing;
  • Customers will require to make for gas supply and distilled water.

Technical Specifications :

  • Equal Pressure Method


Film Test

Package Test (customization available)

Test Range

0.01~5000 cm3/m2·d (Standard)

0.0001~50 cm3/pkg·d (Standard)


0.001 cm3/m2·d

0.00001 cm3/pkg·d

Test Gas

O2, Air and other gases (outside of supply scope)

Specimen Size


100% O2 Test: < 90 mm, Height should be less than 280 mm

No size limitation for Open (Air) Test

Number of Specimen

3 (with independent test results)

Specimen Specification


Bottle: inner diameter of bottle mouth should be more than 9 mm, outer diameter of bottle mouth should be less than 50 mm (Standard)

Bag and Box: Testing accessories are required

Differential Pressure Method

Test Range

0.05 ~ 50000 cm3/m2·24h·0.1MPa (Standard)

Vacuum Resolution

0.1 Pa

Vacuum Degree of Test Chamber

<20 Pa

Test Gas

O2, N2, CO2, etc. (outside of supply scope)

Gas Supply Pressure

-0.1MPa ~ +0.1MPa (Standard)

Number of Specimen

3 (with independent test results)

Test Area

38.48 cm2

Other Specifications

Temperature Range

5oC ~ 95oC

Temperature Accuracy


Pressure of Test Gas

0.6 MPa

Port Size

8 mm PU Tubing

Carrier Gas

99.999% high purified nitrogen (outside of supply scope)

Pressure of Carrier Gas

0.05 MPa

Port Size

1/8 inch copper tubing

Instrument Dimension

1080 mm (L) X 720 mm (W) X 490 mm (H)

Power Supply

AC 220V 50Hz

Net Weight

120 kg

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