The Benefits of WVTR Testing for Medical Hydrogel Dressings

Product Description

High Precision

• Patented test chamber and test dishes with advanced fluid dynamics and thermodynamic designs.
• Labthinks proprietary thermostat technology ensures that the test chamber is precisely temperature controlled and remains stable throughout the test.
• Precise and scientific regulation and calculation of testing conditions.

High Efficiency

• 12 test stations
• Supports test modes of desiccant method and water method

Labor Saving

• Automatic humidity and flow rate controlling.
• Desiccator requires no replacement of inner core.
• High-efficiency water vapor generator.

Simplified Operation

• 12 touch-screen pad powered by WindowsTM 10 operating system
• Fast automatic testing process
• Optional DataShieldTM software and accessories for automatic data management

Product Features

New Generation Test Chamber and Test Dishes
Patented test chamber and test dishes with advanced hydrodynamic and thermodynamic designs ensure the uniform flow rate over the specimen surface, stable temperature and humidity, creating a uniform and stable testing environment. As a result, the test duration is shortened and the test results will be more accurate.

Excellent Testing Abilities of High and Low Barrier Materials
The testing conditions will be regulated precisely in real time, which ensures the high testing accuracy and repeatability of high and low barrier materials.

Automatic Controlling of Temperature, Humidity and Air Velocity
Labthinks proprietary thermostat technology ensures that the test chamber is precisely temperature controlled and remains stable throughout the test.
Air velocity is monitored and regulated in real time.
High-efficiency and mist-free automatic humidity regulator meets the requirements for long-term continuous tests.
It is unnecessary to replace the inner core of the desiccator, which can continuously work for 20,000 hours.

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 facilitates 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 test dish which contains water or desiccant inside. The test dish is placed in the test chamber with stable temperature, humidity and air flow. The water vapor permeates through the specimen and into the dry side. By measuring the weight changes of the test dish periodically, water vapor transmission rate and other parameters can be obtained.

Test Standards

ASTM E96, ASTM D1653, ISO 2528, TAPPI T464, DIN 53122-1, GB/T 1037, GB/T 16928, YBB 00092003-2015

Applications

Basic Applications
Films Plastic films, plastic composite films, paper-plastic composite films, coextruded films, aluminum coated films, aluminum foil composite films, glass fiber aluminum foil paper composite films and many other film materials
Sheeting PP, PVC and PVDC sheeting, metal foils, rubber pads and other sheeting materials
Paper and Paper Board Aluminum coated paper for cigarette, paper aluminum plastic composite film and other paper and paperboards
Textiles and Nonwovens Textiles and nonwoven fabrics
Extended Applications
Construction Materials Geotextiles, felt, roofing and building materials, vapor barrier membranes, etc.
Aseptic Wound Protection Films and Medical Plasters Aseptic wound protecting films, medical plasters and protective clothing materials

Technical Specifications

Table 1: Test Parameters Note1

Parameter		Model C360H
Testing Efficiency	0.01g/(m2day) 0.5g/(m2day)	>24 hours
	0.0006g/(100in2day) 0.0323g/(100in2day)
	0.5 g/(m2day)5 g/(m2day)	12 24 hours
	0.0323g/(100in2day) 0.3225g/(100in2day)
	> 5 g/(m2day)	12 hours
	> 0.3225 g/(100in2day)
Max. Test Range	Water Method	10000/ni141-12i14g/(m2day)
		645/ni141-12i14g/(100in2day)
	Desiccant Method	1200g/(m2day) per piece
		77g/(100in2day) per piece
Test Station		12
Test Temperature	C	20 55 0.2
Test Humidity	RH	10% 90% 1%
Additional Functions	DataShieldTM Note2	Optional
	Computer System required by GMP	Optional
	CFR21 Part11	Optional

Table 2: Technical Specifications

Specimen Size	I74mm
Specimen Thickness	3mm
Test Method	Desiccant Method / Water Method
Standard Test Area	33cm2
Carrier Gas	Compressed Air
Drying of Carrier Gas	Long Service-life Desiccator (unnecessary to replace inner core)
Humidifying of Carrier Gas	High-efficiency mist-free humidity generator
Carrier Gas Pressure	0.6 MPa
Port Size	I6mm PU Tubing

Note 1: The parameters in the table are measured by professional operator in Labthink laboratory according to relative requirements for laboratory standard conditions.
Note 2: DataShieldTM provides safe and reliable data application support. Multiple Labthink instruments can share one single DataShieldTM system which can be purchase as required.
Note 3: The described product features should be in line with Table 1: Test Parameters.

Precise Environmental Control for Reliable Results

The Automated WVTR Tester features an integrated microclimate enclosure, ensuring meticulous regulation of temperature (15C-55C) and humidity (20%-90% RH). This environmental control is vital for consistent, reproducible measurements, particularly in the sensitive evaluation of medical hydrogel dressings where WVTR performance directly impacts patient outcomes. Programmable settings make it easy to simulate real-life storage or application conditions.


User-Friendly Operation and Flexible Data Management

Operating the tester is streamlined by an intuitive Windows-compatible software interface, touch-screen controls, and quick-lock leak-proof sample clamps. Users can log and export up to 9999 test records in CSV or PDF format, facilitating smooth data management and compliance documentation. Automated and manual calibration options minimize downtime and reduce training requirements.


Comprehensive Support for Quality Assurance

To ensure rapid deployment and ongoing reliability, the manufacturer offers onsite installation and remote online diagnostics. Built-in alarms for over-temperature and humidity conditions increase operational safety. These features, combined with full compliance to international standards, make this tester ideal for quality control and R&D applications in the production of medical hydrogel dressings.