Abstract: An oxygen measuring apparatus (500) includes an inlet pipe (506) having a first end and a second end, an oxygen sensor (511) arranged inside the inlet pipe (506) between the first end of the inlet pipe and the second end of the inlet pipe, the oxygen sensor (511) having a communication medium (515) disposed thereon and extending through the second end of the inlet pipe (506), a filtering medium arranged (505) inside the inlet pipe between the oxygen sensor (511) and the first end of the inlet pipe, a housing (501) arranged against the second end of the inlet pipe, and a sensor control interface (512) arranged within the housing (501) and in communication with the communication medium (515) of the oxygen sensor (511).

Abstract: A method of sanitizing a bottled water dispenser may include transporting a portable boiler to a location of a bottled water dispenser. The method also may include generating steam in the portable boiler at the location of the bottled water dispenser, and flowing steam through an outlet of the portable boiler. The method may further include flow coupling the outlet of the portable boiler with an opening of the bottled water dispenser, wherein the opening leads to a fluid flow path of the bottled water dispenser. The method may additionally include flowing steam into the fluid flow path through the opening of the bottled water dispenser, and maintaining steam flow through at least a portion of the fluid flow path for a time period sufficient to sanitize the portion of the fluid flow path. The invention may also include a device for sanitizing a bottled water dispenser with steam.