Tamper-proof chemical dispensing device for high security environments

A method of dispensing liquid from a dispensing unit comprising:

• supplying a mixing unit with water through a water supply hose, the mixing unit being stored in a first chamber;
• supplying a mixing unit with concentrate through a concentrate supply tube, the concentrate being stored in a second chamber;
• mixing the water and the concentrate within the mixing unit to form a liquid mixture;
• and
• dispensing the liquid mixture through an output supply hose into a container, the output supply hose being coupled to a feed-through in the dispensing unit such that the output supply hose is not accessible from the outside of the dispensing unit;
• unlocking a first lockable door, while keeping a second lockable door locked;
• selecting one of a plurality of output hoses through which the liquid mixture is dispensed;
• wherein the first lockable door is coupled to the first chamber by prison screws, the first lockable door having a first crimped hinge such that a first hinge pin can not be removed;
• wherein the second lockable door is coupled to the second chamber by prison screws, the second lockable door having a second crimped hinge such that a second hinge pin can not be removed.

A method of dispensing liquid from a dispensing unit comprising:

• supplying a mixing unit with water through a water supply hose, the mixing unit being stored in a first chamber;
• supplying a mixing unit with concentrate through a concentrate supply tube, the concentrate being stored in a second chamber;
• mixing the water and the concentrate within the mixing unit to form a liquid mixture;
• dispensing the liquid mixture through an output supply hose into a container, the output supply hose being coupled to a feed-through in the dispensing unit such that the output supply hose is not accessible from the outside of the dispensing unit;
• unlocking a first lockable door, while keeping a second lockable door locked;
• and
• selecting one of a plurality of output hoses through which the liquid mixture is dispensed;
• wherein the first lockable door is recessed within the first chamber such that a first hinge pin can not be removed from a first hinge;
• wherein the second lockable door is recessed within the first chamber such that a second hinge pin can not be removed from a second hinge.

A tamper proof apparatus for dispensing liquid comprising:

• a chamber;
• a mixing unit within the chamber;
• a supply tube for transporting a liquid from a supply reservoir to the mixing unit;
• a lockable door coupled to the chamber;
• and
• a protective plate protecting the supply tube when the lockable door is open.

A tamper proof apparatus for dispensing liquid comprising:

• chamber;
• a mixing unit within the chamber;
• a lockable panel on the front of the chamber;
• a faceplate attached to the inside of the chamber protecting the mixing units when the lockable panel is open;
• and
• a plurality of buttons in the faceplate which are not accessible when the lockable panel is closed;
• wherein, the lockable panel prevents the plurality of buttons from being pushed when the lockable panel is closed.

A method of dispensing liquid from a dispensing unit comprising:

• storing a liquid in a supply reservoir located in a first chamber, wherein the first chamber can be locked by a first lockable door;
• supplying a mixing unit located in a second chamber with the liquid through a supply hose, wherein the second chamber can be locked by a second lockable door and at least a portion of the supply hose is concealed by a protective plate even when the second lockable door is open;
• and
• outputting a mixed liquid from the mixing unit from an outlet.