Water vapor transmission rate tester W201 2.0

sensorfor pharmaceutical applicationsfor the electronics industry

Product Introduction
This instrument is developed, designed and manufactured on the electrolytic test principle in accordance with GB/T 21529, ISO 15106-3 and related standards. It measures the water vapor transmission rate (WVTR) of samples under controlled temperature and humidity conditions. Applicable to WVTR testing of high-barrier materials used in LCD displays, solar cells, chip packaging, pharmaceuticals, food and related industries.

Test Principle
The W201 2.0 adopts the electrolytic method. The prepared sample is fixed between two chambers forming a high-humidity side and a low-humidity side. Humidified nitrogen flows on the wet side and dry nitrogen (carrier gas) on the dry side at a set flow. Water vapor diffuses through the sample due to the humidity gradient and is carried by the dry nitrogen to an electrolytic sensor. The sensor electrical output is used to calculate WVTR and related parameters.

Executive Standards
Chinese Pharmacopoeia 2025 Edition (4010 Determination Method of Water Vapor Transmission Rate of Pharmaceutical Packaging Materials), GB/T 21529-2008, ISO 15106-3, DIN 53122-2, YBB00092003-2015, ASTM F3299, JIS K7129-3

Product Features

• Core technology and automation: Electrolytic sensor with high sensitivity and stability; pneumatic control with one-key automatic fixture for fast sample clamping and reliable sealing.
• Precise temperature and humidity control: Bidirectional automatic temperature control via semiconductor cooling plate, accuracy ±0.1°C; dual-airflow humidity control (dry & wet), accuracy ±1% RH.
• Expandable testing capability: Optional fixtures and accessories available to test packages, containers and specialized shapes (pharmaceutical BFS, tubes, etc.).
• User interface and data handling: Built-in 11.6-inch color touchscreen, one-key test and real-time display of up to five curve groups (permeation rate, temperature, humidity, concentration vs. time); customizable reports and multiple export formats, electronic signature and online approval.
• Compliance and calibration: Designed to meet GMP computerized system requirements with audit trail and multi-level user authority; calibrated with national standard WVTR materials for traceable, reliable results.

Application Fields

• Packaging and containers — custom fixtures for pharmaceutical BFS, ointment tubes, infusion tubing.
• Chip packaging materials — FR-4, BT resin, PI, ABF film, Al2O3 ceramic, metal substrates.
• Solar cell barrier materials — backsheets, butyl rubber, ALD Al2O3, POE, EVA films.
• Display barrier materials — LCD high-barrier films such as epoxy resin film, SiNx passivation, modified PET.
• Other industries — ultra-high-barrier materials for pharmaceutical, food and consumer goods.

Technical Specifications

• Test range: 0.001 ~ 40 g/(m²·24h) (film & sheet)
• Resolution: 0.0001 g/(m²·24h)
• Temperature control range: 15 ~ 45 °C
• Temperature control accuracy: ±0.1 °C
• Humidity control range: 5 ~ 90 %RH
• Humidity control accuracy: ±1 %RH
• Permeation area: 50.24 cm²
• Sample size: Ø100 mm
• Sample thickness: ≤ 3 mm
• Test quantity: 1 piece
• Carrier gas: Nitrogen 99.999% (user supplied)
• Carrier pressure: ≥ 0.1 MPa
• Carrier flow: 0 ~ 100 mL/min
• Gas interface: 1/8 inch metal tube
• Dimensions: 380 × 620 × 385 mm
• Weight: 25 kg
• Power: 450 W
• Power supply: AC 220 V, 50 Hz