C390H Water Vapor Transmission Rate Test System, is designed and manufactured based on infrared sensor method and conforms to the requirements of ISO 15106-2 and ASTM F1249. This instrument can be 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. The instrument is featured with patented design of integrated block consisting of 3 test cells. Equipped with high precision sensors and professional computer-controlled system, the instrument can regulate and control the temperature, humidity and flow rate precisely, which guarantee the testing sensitivity and repeatability of test results. C390H 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.
High Precision
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New type infrared sensor for water vapor analysis with higher sensitivity.
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Patented integrated test block with advanced hydrodynamic and thermodynamic design
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Temperature and humidity are accurately and automatically controlled throughout the test, eliminating the need for operator intervention or separate data-logging devices.
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Temperature and humidity sensor for independent monitoring of test cells.
High Efficiency
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Three identical specimens can be tested simultaneously, which meets the requirements for parallel test.
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Three distinct specimens can be tested under same testing condition, delivering higher throughput while reducing the number of instruments required.
Labor Saving
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Automatic temperature and humidity control eliminate the need for operator monitoring and adjustment.
Simplified Operation
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12’’ touch-screen pad powered by WindowsTM 10 operating system
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Fast automatic testing process
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Optional DataShieldTM software and accessories for automatic data management
Product Features
Patented Sensor Technology
The instrument uses Labthink’s proprietary infrared sensor for water vapor analysis, which has excellent precision, repeatability and service life. Higher sensitivity and stability make it unnecessary to calibrate with distinct reference films for different test ranges and the interval between calibrations is extended. The test range of the sensor can be set automatically according to the transmission rate of the specimens without manual adjustment.
New Generation Integrated Testing Block
The patented three-cell integrated test block structure using advanced thermodynamics and hydrodynamics analysis greatly improves the temperature, humidity and flow measurement accuracy across the three test cells and supports sequential testing of three samples.
Automatic Control of Temperature, Humidity and Flow Rate
The internal temperature and humidity of the instrument are automatically adjusted with temperature and humidity sensors, maintaining the stability of the test specimen environment. Automatic flow rate control ensures constant flow during the testing process and minimizes any errors caused by an unstable flow rate.
Easy-to-use and High-efficiency System
The automatic test mode, combined with the instrument features, eliminates the need for manual adjustments to quickly obtain accurate results, saving training costs and releasing staff from manual monitoring so that they are available for other tasks.
The professional test mode provides flexible and rich instrument control functions to meet individual scientific research needs.
Unique, optional DataShieldTM system, meets the requirements for centralized management of user data. It supports a variety of formats of exported data. Reliable security algorithms are used to prevent data leakage. It supports universal wired and wireless LAN, optional private wireless network and third-party software.
User-oriented Service Concept
Adhering to our user-oriented service concept, Labthink has created a customization system that provides flexible and comprehensive customization services for the accommodation of non-standard specimens and packages.
Test Principle
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 infrared sensor where proportional electrical signals will be generated. The water vapor transmission rate is obtained by analyzing and calculating the electrical signals. For whole package specimens, the dry nitrogen flows inside the specimen while the outside of specimen is maintained in a high humidity environment.
Applications
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Basic Applications |
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Films
Plastic films, paper-plastic composite films, coextruded films, aluminum foils, aluminum composite films, glass fiber aluminum foil composite films and many others.
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Sheeting
PP, PVC and PVDC sheets, metal foils, rubber pads, silicon wafers and other sheeting materials.
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Packages
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.
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Extended Applications |
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Closure Systems
Water vapor barrier property of various closure systems for bottles, cartons and pouches.
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Solar Back-sheets
Water vapor permeability test of solar back-sheets
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Plastic Tubes
Water vapor permeability test of various sorts of tubes e.g. cosmetic tubes
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Blister Packs
Water vapor transmission rate of whole blister packs
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Automotive and Small Engine Fuel Tanks
Permeability of plastic fuel tanks
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Battery Plastic Shell
Water vapor transmission rate of battery plastic cell
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Technical Specifications
Table 1: Test Parameters Note1
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Parameter |
Model C390H |
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Testing Efficiency |
g/(m2·day) (Standard) |
0.005 ~ 40 |
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g/(100in2·day) |
0.0003 ~ 2.6 |
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g/(pkg·day) (Package) |
0.000025 ~ 0.2 |
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Resolution |
g/(m2·day) |
0.0001 |
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Repeatability |
g/(m2·day) |
0.005 or 2% |
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Test Temperature |
°C |
10 ~ 55 ±0.2 |
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Test Humidity |
RH |
5% ~ 90% ±1%, 100% |
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Additional Functions |
Package Test (3L Max.) |
Optional |
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DataShieldTM Note2 |
Optional |
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Computer System required by GMP |
Optional |
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CFR21 Part11 |
Optional |
Table 2: Technical Specifications
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Test Chamber |
3 test chambers |
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Specimen Size |
108mm x 108mm |
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Specimen Thickness |
≤3mm |
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Standard Test Area |
50cm2 |
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Carrier Gas |
99.999% High-purity Nitrogen (outside of supply scope) |
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Carrier Gas Pressure |
≥0.28MPa/40.6psi |
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Port Size |
1/8 inch metal tubing |