Testo 300560 9250 925 legionella kit testo 300560 9250 p the testo 925 thermometer legionella kit provides the ideal solution for spot checks of water temperature at outlets throughout your building the 925 is the all rounder for temperature measurement in heating engineering the sanitation sector and refrigeration and air conditioning technology p p it enables fast temperature checks with its large temperature measuring range from 50 to 1000 deg c dependent on the probe selected the