Gtr-7004 Air Permeability Tester

The Gtr-7004 Air Permeability Tester from Systester is a precision instrument designed for measuring porosity, air permeance and air resistance in battery separator membranes, paper, paperboard, textiles and non-woven fabrics. It supports multiple units including Standard Gurley, Low Pressure Gurley, High Pressure Gurley, Sheffield and Bendtsen, with test ranges covering 0 to 60,000 Gurley seconds and 0.0021 to 200 µm/Pa·s. The device features interchangeable test heads, a built-in micro-printer for reports, and a touch screen interface with real-time data and curve display.

Constructed with Swagelok piping for system tightness, the tester includes highly accurate sensors to ensure repeatability, and is compatible with multiple test gases such as air, O2, N2 and CO2 when self-provided. It operates on a differential pressure range of 0.01 kPa to 20 kPa with a resolution of 0.1 Gurley seconds, and accommodates sample thicknesses up to 5 mm. Typical industry applications include quality control in battery manufacturing, paper production and textile processing where consistent material porosity is critical.

This model is widely used by laboratories and production facilities that require traceable calibration to standards like ISO 5636-5, ASTM D726 and TAPPI T460. Buyers typically include battery manufacturers, paper mills and textile producers who need to verify material performance under controlled conditions. The unit is delivered with a mainframe, test head, super filter and precision pressure regulator, with optional accessories such as an auto feeder and additional test heads available.

Systester is based in Jinan, Shandong Province, China, with its registered address at No.22799 Jingshi Road. The company operates as a supplier of laboratory and testing equipment, specialising in instruments for material analysis and quality control. Its profile indicates a focus on precision measurement devices, with the Gtr-7004 Air Permeability Tester representing a key product in its portfolio for industries requiring accurate porosity and air resistance testing.

The supplier provides equipment designed for compliance with international standards, and its product descriptions emphasise features such as traceable calibration and embedded systems for remote service. While the response rate and average response hours are currently listed as zero, the company’s trust tier is classified as harbor, suggesting a baseline level of verification. Buyers are advised to confirm current response metrics and additional verification details directly with Systester.