C390 Water Vapor Transmission Rate Test System

C390 Water Vapor Transmission Rate Test System, is designed and manufactured based on infrared sensor method and conforms to the requirements of ISO 15106-2/ASTM F1249. This instrument can be used to measure the water vapor transmission rate of barrier materials with high, medium and lower 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 properly, which guarantee the testing sensitivity and repeatability of test results. C390 is applicable to determination of water vapor permeability of plastic films, sheeting, paper, packages and other relative packaging materials in food, pharmaceutical, medical apparatus, daily chemical, photovoltaic and electronic industries, etc.

Technical Specifications

Table 1: Test Parameters ^Note1

Parameter \ Model		C390M
Test Range	cm3/(m2·d) (Standard)	0.05 ~ 40
	cm3/(pkg·d)(Package)	0.00025 ~ 0.2
Resolution	cm3/(m2·d)	0.001
Repeatability	cm3/(m2·d)	Bigger one of ±0.05 and 2%
Test Temperature	°C	10 ~ 55 ±0.2
Test Humidity	RH	5% ~ 90% ±1%, 100%
Additional Functions	Package Test (3L Max.)	Optional
	DataShieldTM Note2	Optional
	Computer System required by GMP	Optional
	CFR21 Part11	Optional

Table 2: Technical Specifications

Test Chamber	3 test chambers
Specimen Size	108mm X 108mm
Specimen Thickness	≤3mm
Standard Test Area	50cm2
Carrier Gas	99.999% High-purity Nitrogen (outside of supply scope)
Carrier Gas Pressure	≥0.28MPa / 40.6psi
Port Size	1/8 inch metal tubing

Test Principle

The test specimen is mounted in the diffusion cell, which is subsequently 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 proportion electrical signals will be generated. The water vapor transmission rate is obtained by analyzing and calculating the electrical signals. For package specimen, the dry nitrogen flow inside the specimen while the outside of specimen is in high humidity environment.

Test Standards

This test instrument conforms to the following standards:
ISO 15106-2, ASTM F1249, GB/T 26253-2010, TAPPI T557, JIS K7129, YBB 00092003-2015