Water vapor transmission rate tester W203 2.0

sensorfor the electronics industrylaboratory

Product introduction
W203 2.0 is developed on the electrolytic test principle and is designed and manufactured in accordance with GB/T 21529, ISO 15106-3 and other international standards. It measures water vapor transmission rate (WVTR) of samples under controlled temperature and humidity and is intended for barrier films and sheets used in displays, photovoltaics, chip packaging, pharmaceuticals, food packaging and related industries.

Test principle
W203 2.0 uses the electrolytic method: the pre-treated sample is mounted between wet and dry chambers; humidified nitrogen flows on the wet side and dry nitrogen (carrier gas) on the dry side at a set flow. Water vapor permeating through the sample is carried by the dry nitrogen to an electrolytic sensor; WVTR is calculated from the sensor electrical signal.

Compliant standards

• Chinese Pharmacopoeia 2025 method 4010
• GB/T 21529-2008
• ISO 15106-3
• DIN 53122-2
• YBB 00092003-2015
• ASTM F3299
• JIS K7129-3

Technical specifications
Test range: 0.001 ~ 40 g/(m²·24h) (film & sheet)
Resolution: 0.0001 g/(m²·24h)
Temperature range: 15 ~ 45 °C
Temperature accuracy: ±0.1 °C
Humidity range: 5 ~ 90%RH
Humidity accuracy: ±1%RH
Test area: 50.24 cm²
Sample size: Ø100 mm
Test chambers: 3 channels (independent data)

Key features

• Electrolytic high-sensitivity sensor for ultra-low WVTR measurements suitable for advanced electronics, photovoltaics and displays.
• Automatic pneumatic clamping with one-key locking for consistent sealing of samples.
• Precise temperature and humidity control: ±0.1 °C and ±1%RH.
• Three independent test chambers to increase throughput and parallel testing.
• 11.6-inch HD touchscreen displaying real-time test curves.
• Intelligent operating system with audit trail, multi-level user rights and GMP compliance.
• Calibration with national standard substances for traceable and authoritative results.

Applications

• Display materials: LCD sealants, SiNx passivation films, modified PET, etc.
• Chip packaging: FR-4, BT resin, PI substrates, ABF films, ceramic substrates.
• Solar materials: Backsheets, butyl films, ALD Al2O3, EVA/POE films.
• Packaging components: Pharmaceutical tubes, BFS bottles, infusion hoses, containers.
• Pharmaceutical & food: Ultra-barrier films and packaging for medical and food applications.

Product data

• Brand: GBPI
• Model: W203 2.0
• Product origin: CHINA
• Test range: 0.001 ~ 40 g/(m²·24h)
• Resolution: 0.0001 g/(m²·24h)
• Temperature range / accuracy: 15 ~ 45 °C / ±0.1 °C
• Humidity range / accuracy: 5 ~ 90%RH / ±1%RH
• Test area: 50.24 cm²
• Sample size: Ø100 mm
• Test chambers: 3 channels (independent data)