Macdonald, John Gavin,Cuevas, Brian J.,Fish, Jeffrey E.,Bagwell, Allison Salyer,Lye, Jason,Smith, Molly K.
申请号：
AU2008326163
公开号：
AU2008326163B2
申请日:
2008.10.20
申请国别(地区):
AU
年份:
2014
代理人:
摘要：
There is provided a moisture indicator for a heat and moisture exchange (HME)device that uses a pre-colorant and an activator applied to an inner surface ofthe HME device. The colorant undergoes a color change of Delta E (ΔE) ofequal to or greater than 3 units upon exposure to moisture but not upon exposureto high humidity. The colorant is visually obvious to the unaided human eye undernormal light conditions through the body of the device. The HME device with thevisual indicator for moisture can indicate to the care-giver that it is time tochange the HME device.
