The Labthink C303H Water Vapor Transmission Rate Test System is essential for water vapor transmission rate （WVTR） testing. This advanced water vapor permeability testers performs highly accurate WVTR measurements. It serves as a reliable water vapor permeation tester for films, plastics and so on, providing consistent and accurate moisture vapor transmission data. Compliant with ASTM F1249, it utilizes an infrared sensor for high-precision assessment of water vapor transmission, making it ideal for evaluating the water vapor transmission performance of plastic packaging materials in food, pharmaceutical, and electronics applications.
Product FeaturesNote1
Infrared Moisture Sensor
- The Labthink patented technology infrared moisture sensor enables lower test limits and ensures accurate water vapor transmission rate testing results.
- Designed according to ASTM F1249 standards.
- Long service life and non-consumable design.
- Features over-limit alarm and automatic protection functions.
Accurate Data
- C303H water vapor transmission tester uses 360°air circulation constant-temperature technology to provide better temperature stability.
- Equipped with high-precision temperature and humidity sensors for real-time monitoring and recording of temperature and humidity changes.
- During the moisture vapor transmission rate testing, automatic control of flow, temperature, and relative humidity ensures higher accuracy.
- Achieves superior repeatability of 0.005 g/(m2·day).
High Efficient Three-chamber
- Independent three sets of 50cm2 standard-area test chambers comply with parallel sample detection requirements of WVTR testing equipment.
- Three samples can be tested simultaneously under the same conditions, and data remain independent.
- In the same test cycle, the number of completed water vapor transmission rate tests samples increases from two to three.
- Automatic sample clamping saves time and effort, ensuring consistent clamping force and better sealing.
Intelligent Control
- Controlled via a 12-inch Windows touch panel for easier operation.
- Automatic mode: input test temperature and humidity, and start with one click for full automatic water vapor transmission testing.
- New drawer-type test chamber with one-key automatic in/out function and sound-light reminder.
Safe and Reliable
- Safe running: embedded Labthink industrial computer eliminates system failures caused by computer viruses, ensuring reliable operation and secure data storage.
- Safe operation: equipped with optical and intelligent sensors, plus sound-light alarms to guarantee operator safety.
- Safe performance: built with globally recognized components, ensuring stable, reliable operation for water vapor transmission rate testing.
Powerful Functions
- Professional testing mode provides flexible and comprehensive control functions to meet various research requirements.
- Generates curves for water vapor transmission rate, water vapor transmission coefficient, temperature, and humidity.
- The ultra-wide testing range meets the barrier-performance testing requirements of different materials when using C303H water vapor permeability tester. (Customized)
- Ultra-wide temperature range supports permeability testing at various temperatures. (Customized)
Testing Principle
The pre-treated sample is clamped between the test chambers, the nitrogen with stable relative humidity flows on one side of the film, and the dry nitrogen flows on the other side of the film; due to the existence of humidity difference, water vapor will diffuse from the high humidity side through the film to the low humidity side; on the low humidity side, the water vapor is carried to the infrared water sensor by the flowing dry nitrogen, and different water vapor is generated. The concentration produces different light signals, and the concentration value is obtained through analysis and calculation, and then the water vapor transmission rate of the sample is calculated.
Reference Standards
ASTM F1249, ISO 15106-2, GB/T 26253, JIS K7129, YBB00092003-2015
Test Applications
Basic Applications | Films | The water vapor transmission rate tests of various plastic film, paper plastic composite film, co-extrusion film, aluminum plating film, aluminum foil composite film, glass fiber aluminum foil paper composite film and other film materials. |
Sheet | The water vapor transmission rate tests of PP sheet, PVC sheet, PVDC sheet, metal foil, rubber sheet, silicon sheet and other sheet materials. |
Extended Applications | Package | Water vapor transmission rate testing for bottles, bags, cans, boxes, and drums made of plastic, rubber, paper-plastic composites, glass, or metal—including pharmaceutical packaging, liquor bottles, cola bottles, peanut oil drums, Tetra Pak cartons, vacuum packaging bags, three-piece cans, cosmetic packaging, toothpaste tubes, jelly cups, and yogurt cups. |
Technical Parameters
Table 1: Test Parameters Note2
| Parameter / Model | C303H |
Test scope | g/(m2·day) (standard area 50cm2) | 0.005～40 (standard) 0.005～100 (optional) |
g/(pkg·day (Package) | 0.00002～0.2 (optional) |
g/(m2·day) (MASK area 5cm2) | 0.2～400 (optional) |
Resolution | g/(m2·day) | 0.0001 |
Repeatability | g/(m2·day) | 0.005 or 2%, whichever is greater |
Temperature Range | ℃ | 15～50 5~ 60 (customized) |
Temperature Fluctuation | ℃ | ±0.05 |
Humidity Range | %Rh (within standard temperature range) | 5～90%±1% |
Extended Functions | DataShieldTM Data Shield Note 4 | Optional |
Package Test ChamberNote3 | Optional |
GMP computer system requirements | Optional |
CFR21Part11 | Optional |
Table 2: Technical Specifications
| Test Chamber | 3 sets |
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| Sample Size | 4.4” x 4.4”（11.2cm×11.2cm） |
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| Sample Thickness | ≤120 Mil（3mm） |
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| Standard Test Area | 50cm2 |
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| Carrier Gas Specification | 99.999% high purity nitrogen (gas source is prepared by the user) |
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| Air Source Pressure | ≥ 40.6 PSI / 280 kPa |
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| Interface Size | 1 / 8 "metal tube |
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| Dimensions | 23.6” H x 19.6” W x 27.5” D (60cm× 50cm× 70cm) |
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| Power Supply | 120VAC ± 10% 60Hz / 220VAC ± 10% 50Hz |
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| Net Weight | 220Lbs（100kg） |
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Table 3: Product Configuration
| Standard Configuration | Mainframe, tablet computer, sampler, vacuum grease, polyurethane pipe with diameter of 6 mm |
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| Options | Package Test Chamber, Air compressor, CFR21Part11, GMP computer system requirements, DataShieldTM Data Shield Notes4 |
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| Note | The compressed air inlet of the machine is Φ 6 mm polyurethane pipe (pressure ≥ 79.7 psi / 550 kPa); the air source is prepared by the user. |
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Note 1: the product features are subject to the specific notes in the "Technical Parameters" table.
Note 2: the parameters in the table are measured by professional operators in Labthink laboratory according to the requirements and conditions of relevant laboratory environmental standards.
Note3：Package fixtures can be customized to sample size.
Note 4: DataShieldTM Data Shield systemprovides safe and reliable data application support.The system can be shared by multiple Labthinkproducts. Please purchase it separately according to the usage.
Contact Us!We can help you select or customize the proper unit for your test requirements.
