WVTR-E3 Water Vapor Transmission Rate Tester, designed based on the electrolytic sensor method, is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other relative packaging materials in food, pharmaceutical, medical apparatus, consumer goods, photovoltaic and electronic industries, etc.
WVTR-E3 Water Vapor Transmission Rate Tester is designed and manufactured based on the electrolytic sensor method, used to measure the water vapor transmission rate of barrier materials with high and medium moisture barrier properties with a wide testing range and high testing efficiency. WVTR-E3 is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other relative packaging materials in food, pharmaceutical, medical apparatus, consumer goods, photovoltaic and electronic industries, etc.
Water Vapor Transmission Rate Tester
-High precision micro vapor electrolytic sensor, which improves testing accuracy and stability
-Precise flux controller and automatic gas flux control technology, ensured stable testing process effectively
-World's first advanced water circulated temperature control system, realized temperature auto control and wider temperature range
-Independent temperature control for upper/lower chamber and electrolytic sensor, which ensured accurate testing results
-Self-developed pipeline gas system, ensured system seal ability of gas pipelines.
-Integrated test structure, the three chambers are tested at the same temperature and humidity to ensure the consistency of the test conditions of different test chambers
-Sample griping integrated with self-developed anti-side leakage technology, ensured testing accuracy.
-Integrated with fully automatic double pressure humidity control method makes wide range of humidity control.
-Manual, ratio, continuous mode for different testing requirement.
-Independent testing for three chambers, no test process interference, independent results.
-Automatic power failure saving function to avoid test interruption
-Automatic record of the whole testing process, result judgement and results saving function.
-Efficient testing, low nitrogen consumption and short test time
-System self-detection to avoid continuing testing in the state of failure
-Real-time monitoring of gas flow, automatic alarm when gas running low.
-Rapid access to the temperature and humidity verification port, convenient for users fast calibration.
-Simple and intuitive operation interface, convenient user-defined testing functions, and perfect data analysis and reporting functions
-Possess powerful functions such as window display, curve overlay analysis, test report customization, original data export, editable with Office software, etc.
-Full process data monitoring and recording, sampling rate adjustable and auto test repeating according to needs.
-The software can be equipped with optional data traceability, which can realize multi-level authority management, audit tracking, electronic signature and other functions, comply with GMP requirements.
-Pubtester also provides professional customization services to meet users' personalized needs in terms of fixtures and software.
-Provide lifetime software free upgrade
The test specimen is mounted in the diffusion cell, which is divided into a dry chamber and a controlled-humidity chamber. The dry side of the specimen is swept by a flow of dry nitrogen, and the water vapor permeating through the specimen from the controlled-humidity chamber is carried by dry nitrogen to the electrolytic sensor where proportion electrical signals will be generated. The water vapor transmission rate is obtained by analyzing and calculating the electrical signals.
Plastic films, paper-plastic composite films, coextruded films, aluminum foils, aluminum composite films, glass fiber aluminum foil composite films and many others.
PP, PVC and PVDC sheets, metal foils, rubber pads, silicon wafers and other sheeting materials.
Paper, paper board and composite materials.
Cigarette aluminized paper, paper aluminum-plastic composite sheet and other paper and cardboard
Plastic, rubber, paper, paper-plastic composite, glass and metal packages, e.g. plastic bottles, pouches, coated paper cartons, vacuum bags, metal three-piece cans, plastic packages for cosmetics, soft tubes for tooth paste, jelly and yogurt cups.
All types of package closure
LCD display and its relevant sheet.
Solar Back-sheets and its relevant sheet.
PPR and other types of pipes
Whole blister packs
Aseptic protective film, medical
Aseptic protective film, medical plaster patch
Battery Plastic Shell
Battery plastic cell
0.001~ 50 g/m2·24h
Container：0.00001~ 0.25 g/pkg.24h (Optional)
≤3 mm（Accessories needed for thicker specimen）
Number of Specimens
Temperature Control Range
Humidity Control Range
0% RH, 35%~95%RH, 100%RH
99.999% High-purity Nitrogen (outside of supply scope)
Carrier Gas Flow
100 mL/min（auto control）
Carrier Gas pressure
1/8inch metal tubing
740mm (L)×415 mm (W)×430mm (H)
AC 220V 50Hz
ISO 15106-3, ASTM F3299, ISO 9932, GB/T 21529, YBB 00092003-2015
Standard configuration: Instrument, professional software, communication cable, sampler, precise pressure control valve, vacuum grease, reference film
Optional configuration: Container testing accessories, temperature and humidity control device for container fixtures
Note：Gas supply and distilled water need to be prepared by customer