As the Watchdog® adsorbs water the silica gel turns from gold to very dark blue/green. In fact, it looks black to most people. Seeing a light green color throughout the gold is not a signal to replace the breather. When all of the silica gel has changed color, to the very dark blue/green, the breather should be replaced. A breather that still has a small amount of gold color, or even light green color, showing is just as good as a new breather.

Posted in: Watchdog Desiccant Breather

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