Gas transmission rate tester N500A 2.0

for oxygen transmission ratefor packagingCO2

GTR Device / Gas Permeability Analyser / Gas Permeability Analyzer/ Gas Transmission Rate Testing Equipment

Product Introduction
The N500A 2.0 Gas Permeability Tester is a laboratory instrument integrating mechanical, electronic and software systems for quantitative measurement of gas transmission through films, sheets, foils and packaged containers. It supports testing of packaging items including bottles, bags, cans and boxes using gases such as O2, CO2, N2 and air.

Test Principle
The instrument operates on the differential pressure method. The sample is mounted between upper and lower chambers. After evacuation by a vacuum pump, a reference gas at controlled pressure is introduced to the upper chamber. Gas permeating through the sample is measured by monitoring pressure changes in the lower chamber and converting these into permeation values.

Standards
GB/T 1038.1; ISO 2556; ISO 15105-1; ASTM D1434; JIS K7126-1; YBB 00082003

Features

• Patented core technology for precise measurement
• Imported high-precision vacuum sensors with silicon piezoresistive chips and temperature compensation; full-scale drift ~0.01% reading/°C; repeatability ≤±0.2% FS.
• Automatic pressure-difference maintenance with adjustable setpoint and high-resolution pressure sensor (0.01 Pa).
• Bidirectional semiconductor cooling plate for automatic temperature control, accuracy 0.1°C.
• High-reliability vacuum pump with ultimate pressure down to 0.05 Pa and low noise.
• New pneumatic gas circuit and automatic fixture for fast, reproducible sample sealing.
• Wide testing range from 0.01 to 25000 cm³/(m²·24h·0.1MPa), suitable for high/medium/low-barrier materials; accessories available for bottles, bags and bowls.
• Software modules for permeation analysis: gas transmission rate, permeability coefficient, diffusion and solubility coefficients; temperature-dependent fitting and optional high-pressure testing (0–300 kPa).
• Fully automatic one-key test sequence with real-time display of permeation, temperature and pressure curves; multi-format data export and electronic signature support.
• Calibration and verification with national standard substances for traceable results.

Application
Films: PP/PET/PE/PVC/BOPP/CPP, composite and co-extruded films, aluminized and biodegradable films (PLA/PBAT/PBS) and other membrane materials.
Sheets: rigid medical sheets (PP/PVC/PTP), metal-composite sheets, rubber sheets.
Paper & cardboard: coated paper, silicone paper, aluminumized paper, paper–plastic composites.
Medical patches and hygiene products: transdermal patches, warm patches, sanitary napkins, pads.
Packaging: beverage and oil bottles, Tetra Pak, vacuum bags, three-piece cans, cosmetic packaging, tubes, cups, yogurt containers, etc.
Gases: O2, CO2, N2, air, He.

Technical Specifications

• Testing range: 0.01–25000 cm³/(m²·24h·0.1MPa)
• Resolution: 0.0001 cm³/(m²·24h·0.1MPa)
• Temperature control range: 15–60 °C
• Temperature accuracy: ±0.1 °C
• Vacuum accuracy: indicated value ±0.2%
• Ultimate vacuum: ≤10 Pa
• Vacuum resolution: 0.01 Pa
• Testing pressure: 0.1 MPa
• Test gases: O2, CO2, N2, etc.
• Permeation area: 50.24 cm²
• Sample size: Φ110 mm
• Sample thickness: ≤2 mm
• Testing quantity: 1 piece
• Dimensions: 380 × 585 × 345 mm
• Pneumatic pressure: ≥0.3 MPa
• Power: 450 W
• Power supply: AC 220 V, 50 Hz