W301 2.0 Water Vapor Transmission Rate Tester
Product Introduction
This instrument adopts the gravimetric weight-loss test principle, developed and manufactured in accordance with standards including GB/T 1037 and ASTM E96. It is applicable to water vapor transmission performance testing of films, sheets, paper, finished packages and related materials for food, pharmaceutical, medical device, daily chemical, photovoltaic and electronic industries. It delivers wide-range, high-efficiency WVTR detection for high, medium and low water vapor barrier materials.
View More InquiryTest Principle
Add distilled water into a dry and clean moisture-permeable cup, seal the cup with pre-treated sample film and place it inside the test chamber. By precisely controlling temperature and humidity, distilled water inside the cup evaporates. Water vapor penetrates through the specimen film, and the descending weight of the moisture cup over time is measured to calculate key barrier performance parameters of the sample.
Compliant Test Standards
- Chinese Pharmacopoeia 2025 Edition, 4010 Water Vapor Transmission Test Method for Pharmaceutical Packaging Materials
- GB/T 1037, GB/T 16928
- ASTM E96/E96M, ASTM D1653
- ISO 2528, DIN 53122-1, JIS Z0208, YBB 0009-2003
Technical Specifications
| Test Range | 0.1~10000 g/(m²·24h) |
| Resolution | 0.0001 g/(m²·24h) |
| Temperature Control Range | 15~55℃ |
| Temperature Control Accuracy | ±0.1℃ |
| Humidity Control Range | 90%RH Relative Humidity |
| Humidity Control Accuracy | ±2%RH |
| Effective Test Area | 50.24 cm² |
| Specimen Size | Φ90 mm |
| Max Specimen Thickness | ≤3 mm |
| Simultaneous Test Quantity | 1 piece |
| Overall Dimension | 380*545*315mm |
| Net Weight | 22kg |
| Rated Power | 450 W |
| Power Supply | AC 220 V, 50 Hz |
Product Advantages
1. Patented Core Technology for Ultra-high Precision Testing
Equipped with high-precision weight sensor for fast, stable weighing, resolution up to 0.0001 g/(m²·24h). Adopts bidirectional temperature control via semiconductor refrigeration chip combined with PID auto-adjust software, temperature precision reaches ±0.1℃.
2. Wide Measurement Range & Broad Compatibility
Single compact test chamber saves laboratory space. Wide test range 0.1~10000 g/(m²·24h) covers high/medium/low barrier films. Optional fixtures support finished package testing including bottles, bags and bowls.
3. Ergonomic Appearance & Real-time Visual Curve Display
Streamlined 3D printed housing designed with ergonomics & industrial aesthetics. Fully automatic one-click operation with auto-judgment & auto-stop function. Real-time 4 groups of curves: WVTR-Time, Temp-Time, Humidity-Time, Weight-Time; curves support show/hide toggle.
4. Intelligent OS with Global Pharmaceutical Compliance
Self-developed modular graphic operating system with flexible parameter setup. Designed per GMP Annex for computerized systems, supporting audit trail & multi-level user access control to meet pharmaceutical data traceability requirements. Custom test reports with multi-format export, digital signature and online review submission supported.
5. Authorized Calibration for Reliable Test Data
The company holds National Standard Reference Material Certificate (GBW(E)130543 / GBW(E)130544) issued by State Administration for Market Regulation. Self-produced national standard reference materials are used for instrument calibration to guarantee accurate, universal and authoritative test results.
6. Intelligent Lab IoT Cloud Platform Access
Supports IoT connection for digital network management. Remote login enables data management & remote fault diagnosis. Users can download instrument manuals, documents and operation videos on the cloud platform.
Application Fields
Films
Plastic films (PP/PET/PE/PVC/BOPP/CPP), composite films, paper-plastic laminates, metal-laminated films, co-extruded films, aluminum-coated films, biodegradable films (PLA/PBAT/PBS) and other membrane materials WVTR testing.
Sheets
Pharmaceutical rigid sheets (PP/PVC/PTP), metal composite sheets, rubber sheets barrier performance testing.
Paper & Paper Composite Materials
Coated paper, silicone coated paper, cigarette aluminum foil paper, paper-aluminum-plastic composite sheets.
Medical Patches
Water vapor transmission test for medical plaster treatment patches.
Finished Packaging Containers
Custom fixtures expand testing capacity for pharmaceutical PE bottles, sealed sachets, ointment tubes, infusion tubes, plastic trays and other finished packaging.

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