Information on the most widely used ASTM standards within the materials testing industry
Model: UT4007A / UT4007B; ASTM D737, ISO 9237, ISO 7231
Textile Air Permeability Testing Machine is used to determine the air permeability of fabric totally automatically. Auto Air Permeability Tester complies with ASTM D737, ISO 9237, ISO 7231, ISO 5636, BS 5636, DIN 53887, JIS L1096, BS 5636 etc.
With its wide measuring range, it is suitable for all kinds of knitted, woven, non-woven, coated fabrics, paper, film, leather, etc.
General Introduction
Textile Air Permeability Testing Machine is used to determine the air permeability of fabric totally automatically. Auto Air Permeability Tester complies with ASTM D737, ISO 9237, ISO 7231, ISO 5636, BS 5636, DIN 53887, JIS L1096, BS 5636 etc.
With its wide measuring range, it is suitable for all kinds of knitted, woven, non-woven, coated fabrics, paper, film, leather, etc.

Main features
1, Imported high accuracy pressure sensor.
2, Intelligent touching screen interface, display the complete test process.
3, Full range, automatically measure all kinds test sample air permeability and volume.
4, Free set various kind of parameter, unit etc., test result directly display and print out.
5, Measuring unit: mm/s, cfm, cm3/cm2.s, L/m2.s, L/dm2.min, m3/m2.min.
6, Optional professional measuring software, computer and touching screen both way operation.
ASTM D737: Standard Test Method for Air Permeability of Textile Fabrics;
ISO 9237: Textiles — Determination of the permeability of fabrics to air;
ISO 7231: Polymeric materials, cellular, flexible — Determination of air flow value at constant pressure-drop;
ISO 5636, BS5636, DIN 53887, JIS L1096, BS5636 etc.
Main Technical Specification
| Pressure range | 0~4000Pa free setting |
| Measuring air permeability | 0.2~12000mm/s |
| Measuring accuracy | ≤±2% |
| Measuring thickness | ≤15mm (customized) |
| Air column adjusting | Real time adjusting |
| Sample area circle block | 5mm2, 20mm2, 50mm2, 100mm2, |
| Sample diameter circle block | Ф50mm(≈19.6cm2)Ф70mm(≈38.5cm2) |
| Nozzle | Total 11 pcs |
| Data storage | 1000 numbers test |
| Data output | Touching screen and optional computer |
| Power | AC 220V, 50HZ. 2Kw |
| Weight | 80kg |
| Dimensions | 600*700*1100mm |
Standard
ISO 5636-5 permeability test Paper and board — Determination of air permeance (medium range) Part 5: Gurley method
ISO 5636-5 specifies the Gurley method for determining the air permeance of paper and board using an air resistance tester, the Gurley apparatus.
It is applicable to papers and boards which have air permeances between 0,1 µm/(Pa⋅s) and 100 µm/(Pa⋅s) when tested with the Gurley apparatus. It is unsuitable for rough-surfaced materials, which cannot be securely clamped to avoid leakage.
ISO 15105-1 Plastics — Film and Sheeting — Determination of Gas-transmission Rate — Part 1: Differential-pressure Methods
ISO 15105-1 defines two standardized differential-pressure test methods to quantify the gas barrier performance of plastic films, sheets and multi-layer plastic structures, focusing on measuring Gas Transmission Rate (GTR) and Gas Permeability Coefficient (P) under a controlled gas partial pressure difference across the specimen.
ISO 2556 Plastics — Determination of the gas transmission rate of films and thin sheets under atmospheric pressure — Manometric method
ISO 2556 defines a single mercury-based manometric differential-pressure test method to measure Gas Transmission Rate (GTR) of thin plastic films and sheets, with a measurable range of 1 to 20000 cm³/(m²·d·atm). It uses a mercury capillary manometer to quantify pressure rise in the evacuated low-pressure chamber under a fixed upstream atmospheric test gas pressure.
ASTM D1434 Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting
ASTM D1434 defines an electronic manometric differential-pressure method to measure three core barrier metrics: Gas Transmission Rate (GTR), permeance, and material permeability (only valid for homogeneous plastics). It covers plastic films, sheets, multi-layer laminates, plastic-coated paper and plastic-coated fabrics, and follows WTO TBT international standardization principles.
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