Test swab device and method of detecting lead, mercury, arsenic, and bismuth
AssigneeHybriVet Systems, Inc.
InventorMarcia J. Stone
Life of this patent
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Abstract
A swab is impregnated with a test reagent such that a test for a specific substance can be effected by rubbing the impregnated swab over the surface to be tested and then viewing the swab for a reagent reaction. A method for testing for a substance includes impregnating a swab with a reagent, and rubbing the swab over a surface suspected of containing the substance. If the substance is present in the surface, a reaction with the substance produces an easily detectable color on the swab tip.
Claims37
A method of testing for a metal on a surface with a reagent that reacts with the metal, comprising the steps of:
- providing a swab stick having a stem and an absorbent ball of material at one end of the stem, wherein the absorbent ball of material is impregnated with the reagent;
- contacting the impregnated absorbent ball of material with the surface;
- and
- detecting the presence of the metal by inspecting the impregnated ball of material for a reaction between the metal and the reagent;
- wherein the metal tested for is mercury.
A method of testing for a metal on a surface with a reagent that reacts with the metal, comprising the steps of:
- providing a swab stick having a stem and an absorbent ball of material is impregnated with the reagent;
- contacting the impregnated absorbent ball of material with the surface;
- and
- detecting the presence of the metal by inspecting the impregnated ball of material for a reaction between the metal and the reagent;
- wherein the metal tested for is arsenic.
A method of testing for a metal on a surface with a reagent that reacts with the metal, comprising the steps of:
- providing a swab stick having a stem and an absorbent ball of material at one end of the stem, wherein the absorbent ball of material is impregnated with the reagent;
- contacting the impregnated absorbent ball of material with the surface;
- and
- detecting the presence of the metal by inspecting the impregnated ball of material for a reaction between the metal and the reagent;
- wherein the metal tested for is bismuth and the reagent comprises cinchonine and potassium iodide.
A device for testing for a metal on a solid surface, comprising:
- a cartridge having two ends and an absorbent ball of material mounted at each end;
- at least two compartments within said cartridge wherein at least one compartment contains a reagent that reacts with the metal and at least one of the other compartments contains an activating solution;
- wherein the reagent and activating solution are combined and mixed within the cartridge before the device is used and the substance tested for is selected from the group consisting of lead and mercury.
A device for testing for a metal on a solid surface, comprising:
- a cartridge;
- at least two compartments within said cartridge wherein at least one compartment contains a reagent that reacts with the metal and at least one of the other compartments contains an activating solution;
- and
- an absorbent ball of material mounted at at least one end of the cartridge;
- wherein the reagent and activating solution are combined and mixed within the cartridge before the device is used and the metal tested for is mercury.
A device for testing for a metal on a solid surface, comprising:
- a cartridge;
- at least two compartments within said cartridge wherein at least one compartment contains a reagent that reacts with the metal and at least one of the other compartments contains an activating solution;
- and
- an absorbent ball of material mounted at least one end of the cartridge;
- wherein the reagent and activating solution are combined and mixed within the cartridge before the device is used and the metal tested for is arsenic and the reagent comprises magnesium nitrate and ammonium chloride.
A device for testing for a metal on a solid surface, comprising:
- a cartridge;
- at least two compartments within said cartridge wherein at least one compartment contains a reagent that reacts with the metal and at least one of the other compartments contains an activating solution;
- and
- an absorbent ball of material mounted at at least one end of the cartridge;
- wherein the reagent and activating solution are combined and mixed within the cartridge before the device is used and the metal tested for is bismuth and the reagent comprises cinchonine and potassium iodide.
A test kit for testing for a metal on a solid surface, comprising:
- at least one cartridge;
- at least one crushable compartment within said cartridge containing a reagent that reacts with the metal;
- and
- an absorbent ball of material mounted on at least one end of the cartridge;
- wherein the metal tested for is lead;
- and
- further comprising a separate control tube for dispensing sodium sulfide.
A device for testing for a metal on a solid surface, comprising:
- a hollow stem;
- at least one compartment within said stem wherein said compartment contains a reagent that reacts with the metal in such a manner so as to give a visual indication of the reaction;
- an absorbent ball of material mounted at each end of the stem;
- and
- wherein said absorbent ball of material is connected to the compartment by a passageway so that reagent in the compartment can flow to both of the absorbent balls when the compartment is opened and the reagent tested for is selected from the group consisting of lead and mercury.
Dependencies are inferred from the claim text.