http://int.myswitzerland.com/en/pix.cfm?category=Gallery&mod...
The healing powers of the 37° C warm ***acrato thermal baths*** are an invitation the whole year round to enjoy total bathing pleasure.

http://www.intours.si/ang/lasko.htm:
The waters at the Lasko Health Resort emanate from a natural ***acrato-thermal spring***, wich has a temperature of between 32 to 35° C, and possesses a mineral curative factor.

http://www.mmb-tours.ltd.bg/varshets-procedures.htm:
the mineral water (which has some of the finest mineral qualities in Europe) and it is used for hydrotherapy - internally (by drinking) and externally (pools, different types of baths, and underwater massage). It is acrato-thermal (200mg/l.), alkaline, hydro-carbonate-sulfate-sodium and its temperature is about 37degrees Centigrade. It also has pleasant taste;