by rpavlis on Sun Dec 31, 2006 5:44 pm
These things look very beautiful, do they not?
Basically all that they are is a lamp with a large block of crystaline salt. They vary in mass, some weigh several kilos. Unless there are aroma producing materials in the lamp, salt has an extraordinarily low vapour pressure. The only way one could get salt in the vapour phase is thus to heat it to hundreds and hundreds of degrees, and even then it is just salt. I have lots of lamps in my house, really too many, I do not have one of these, maybe I should add one to my already large assortment of lamps! I think it a bad idea to have these in areas of high humidity, because they will take on water and sort of "melt". If one have them in high humidity, one needs to have them on a lot.
I worry a great deal about volatile oils--there are some of them that are really toxic to birds. Candles with some of these oils are deadly. I do not know about eucalyptus.