Stability chambers with humidity control have one major weakness – they require a source of water for the  humidity generator. And water eventually destroys whatever it touches, by corrosion -if it’s ultrapure, or by depositing- if it isn’t ultrapure. One solution to maintaining water quality for optimal humidity generator life is to re-circulate it. Start with a vessel filled with the correct type of water, as recommended by the manufacturer of the stability chamber, pump it through a filter into the chamber water inlet, then collect the condensate that drains from the stability chamber cooling system and return it to the vessel. The filter boosts the water quality back to optimal and an in-line UV light kills bacteria, fungus and mold. The vessel can be topped off once a month with distilled water (RO)… shaving costs and saving the planet.