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A large medical device manufacturer is using the VL-2000-LRH Low Relative Humidity Logger to test the moisture barrier properties of their product packaging.
According to the company, the loggers are placed in the product packages after they have been vacuum packed and purged with nitrogen. This process creates the totally moisture free environment (approximately 0% RH) necessary to ensure product quality. The packages are then placed in a one month high temperature, high humidity environment for an accelerated study.
Following the study, the loggers are examined to determine the level of moisture ingress. Increases in moisture can be determined by examining the collected data for increases in dewpoint temperature or relative humidity.
The above tests are designed to test the integrity of the company's packaging methods and to maintain the highest possible levels of product quality.
Important factors in using Veriteq VL-2000-LRH data loggers for this application included:
- Exceptionally small size to fit in the product packages
- Long battery operation to reliably last throughout the entire test
- Large memory capability
- High accuracy temperature and relative humidity, especially over the low range of 0 to 20%RH
- High precision to detect small changes in relative humidity or dewpoint
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