Chemicals and other additives in tap water can potentially interact with or lessen the benefits of liquid fertilizers, pesticides and herbicides. By using purified water as a base to mix with you can maximize the effect of your products.
In Industry many chemicals are diluted and packaged using purified water as a base to eliminate the possibility of interactions rendering their product less effective
In portable evaporative air conditioners ( Eliminates dirt, salt build-up and calcium deposits through cooling medium and inside cooler chassis)