368 



APPLIED BACTERIOLOGY 



and therefore its temperature, can accordingly be recorded 

 on an automatic recording-gauge. Objects are dried by 

 air heated over coils at the bottom of the disinfection 

 chamber and determining a slight aspiration at the upper 

 part of the stove. 



The Equifex Low-Pressure Disinfector. — This consists of a 

 disinfection cylinder, mounted on either one or two cylinders, 



Fig. 34. — Equifex Disinfectoe. 



which serve as steam-generators. The pressure of steam, 

 which is usually 2 lb. per square inch, is controlled by the 

 use of a water-seal. ,The air contained in the disinfector is 

 blown out by the steam on admission, and the steam during 

 disinfection is allowed continuously to escape. For drying, 

 a current of air heated by passage through pipes fitted in 

 the steam space of the generator is passed over the objects 

 under treatment. A recording-gauge is usually supplied for 

 registering the changes of temperature. 



Thresh's Disinfector.— This consists of a disinfecting 

 chamber surrounded by a boiler containing a solution of 



