Fluid tester and method of use

• US 7,319,037 B1
• Filed: 05/14/2002
• Issued: 01/15/2008
• Est. Priority Date: 05/14/2002
• Status: Expired due to Fees

• Current Assignee: Orit Albeck-Marom
• Original Assignee: Orit Albeck-Marom
• Inventors: Albeck-Marom, Orit
• Primary Examiner(s): ALEXANDER, LYLE
• Application Number:
  US10/145,797
• Time in Patent Office: 2,072 Days
• Field of Search: 422/58, 422/61, 436/39, 436/163
• US Class Current: 436/39
• CPC Class Codes: G01N 31/22 using chemical indicators G01N31/02 takes precedence
• CPC Class Codes: G01N 33/1853 Hardness of water

Abstract

Fluid testing device for determining the value of each of a plurality of properties of a fluid, the fluid testing device including a planar base and a plurality of test sections, located on the planar base, each of the test sections including a test sub-section which exhibits a color according to the value, as a result of reaction of a reagent with the fluid and a reference section located adjacent to the test sub-section, the reference section including a plurality of different reference colors.

Claims

1. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, nitrate, nitrite, free chlorine and copper.

2. The fluid testing device according to claim 1, wherein said test section further comprises a label respective of a property of said fluid.

3. The fluid testing device according to claim 1, wherein each of said properties is a concentration of a different substance in said fluid.

4. The fluid testing device according to claim 1, wherein said device is capable of testing fluids selected from the group consisting of:

water;

liquid fuel; and

crude oil.

5. The fluid testing device according to claim 1, wherein said test substrate is made of a material selected from the list consisting of:

flexible polymer;

rigid polymer;

fabricated materials;

glass;

paper;

plastic coated paper;

cardboard;

timber;

dry clay;

ceramic;

masonry;

leather;

textile; and

metal.

6. The fluid testing device according to claim 1, wherein said test substrate is in the form of a sheet.

7. The fluid testing device according to claim 6, wherein the geometry of said sheet is selected from the list consisting of:

rectangle;

square;

triangle;

rhombus;

parallelogram;

trapezoid;

quadrilateral;

circle;

annulus;

ellipse;

sector of a circle; and

freeform closed curve.

8. The fluid testing device according to claim 6, wherein the form of said sheet is selected from the list consisting of:

flat;

rolled;

folded;

twisted;

convex; and

concave.

9. The fluid testing device according to claim 1, wherein said different reference colors are of the same hue, and wherein each of said reference colors are of different saturation levels and different brightness levels.

10. The fluid testing device according to claim 1, wherein at least one of said different reference colors designating an acceptable value of a property of said fluid, is separated by a limit line, from at least another one of said different reference colors designating an unacceptable value of said property.

11. The fluid testing device according to claim 1, wherein said test section further comprises a value indicating section, said value indicating section includes a plurality of numbers, each of said numbers is located adjacent to a respective reference color, each of said numbers represents a selected value of a property of said fluid.

12. The fluid testing device according to claim 11, wherein a selected one of said numbers is represented in a different style, thereby separating at least one number which designates an acceptable value of said property, from at least another number which designates an unacceptable value of said property.

13. The fluid testing device according to claim 12, wherein said different style is selected from the list consisting of:

bold;

italics;

underlined;

color;

font; and

size.

14. The fluid testing device of claim 1 further comprising:

a container, having at least a transparent portion, within which said test substrate is disposed.

15. The fluid testing device according to claim 14, further comprising a stopper for closing an at least partially open end of said container.

16. The fluid testing device according to claim 14, wherein said container is made of a material selected from the list consisting of:

polymer;

glass;

timber;

dry clay;

ceramic;

masonry; and

metal.

17. The fluid testing device according to claim 14, wherein the cross section of said container is selected from the list consisting of:

rectangle;

square;

triangle;

rhombus;

parallelogram;

trapezoid;

quadrilateral;

circle;

annulus;

ellipse;

sector of a circle; and

freeform closed curve.

18. The fluid testing device according to claim 14, wherein said container comprises a plurality of different labels respective of different ones of said properties, each of said different labels being located adjacent to a respective one of said test sections.

19. The fluid testing device according to claim 14, wherein each one of said test sections is attached to the inner wall of said container.

20. The fluid testing device according to claim 19, wherein said test section is replaced by an unused test section of the same kind, after testing said fluid.

21. The fluid testing device according to claim 14, wherein a reference section respective of a property of said fluid is in form of a circle, said different reference colors respective of said reference section are in form of sectors of said circle and a test section respective of said property, is in form of an annulus surrounding said circle.

22. The fluid testing device of claim 1 further comprising:

a plurality of containers, each container having,

at least a transparent portion; and

a test substrate disposed therein.

23. The fluid testing device according to claim 22, wherein said containers are part of a solid body.

24. The fluid testing device according to claim 22, wherein each of said containers is a separate body, and wherein said containers are attached together by an adhesive or at least one fastener or welding.

25. The fluid testing device according to claim 22, further comprising an at least partially open end of each of said containers and a stopper for closing an at least partially open end of each of said containers.

26. The fluid testing device according to claim 25, wherein said stoppers are part of a body.

30. The fluid testing device according to claim 22, wherein said containers are constructed as separate cavities within a single body.

27. A method for determining the value of each of a plurality of multi-test properties of a fluid, the method comprising the steps of:

providing a plurality of test sections on a test substrate;

pre-associating a multiple color reference scheme with a property test substance which has been impregnated within each of a respective one of said test sections prior to testing, such that each reference color of said reference scheme is situated adjacent to and in contact with said property test substance on said test section, wherein said test section substantially encompasses said entire reference scheme having said multiple reference colors;

immersing said test substrate in said fluid, the property test substance on each test section exhibiting, in accordance with a value of said fluid property, a test reaction color that matches one of the reference colors located on its adjacent reference scheme, so as to become substantially visually merged therewith;

identifying said exhibited test reaction color of said property test substance that matches a selected one of different reference colors of said multiple color reference scheme, without requiring the physical alignment of said test sub-section with said reference colors; and

determining a respective one of said values according to the outcome of said identifying step, by visually matching said exhibited test reaction color with one of said different reference colors due to self-alignment therebetween,

said determined respective one of said values being provided in a recordable form

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, nitrate and nitrite.

28. The method according to claim 27, wherein said determining step further comprises reading a selected one of a plurality of numbers, said selected number designates said value, and

wherein each of said numbers is located adjacent to a respective one of said different colors.

29. A method for determining the value of each of a plurality of multi-test properties of a fluid, the method comprising the steps of:

providing a plurality of test sections, each located on the inner wall of a respective one of a plurality of containers;

pre-associating a multiple color reference scheme with a property test substance which has been impregnated within each of a respective one of said test sections prior to testing, such that each reference color of said reference scheme is situated adjacent to and in contact with said property test substance on said test section, wherein said test section substantially encompasses said entire reference scheme having said multiple reference colors;

subjecting said test sections to said fluid, the property test substance on each test section exhibiting, in accordance with a value of said fluid property and upon contact with said fluid, a test reaction color that matches one of the reference colors located on its adjacent reference scheme, so as to become substantially visually merged therewith;

identifying said exhibited test reaction color of said property test substance that matches a selected one of different reference colors of said multiple color reference scheme, without requiring the physical alignment of said test sub-section with said reference colors; and

determining a respective one of said values according to the outcome of said identifying step, by visually matching said exhibited test reaction color with one of said different reference colors due to self-alignment therebetween,

said determined respective one of said values being provided in a recordable form

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, free chlorine and total chlorine.

31. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, free chlorine, total chlorine and at least one of the subgroup of lead, zinc, iron and copper.

32. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total alkalinity, total hardness, nitrate, and nitrite.

33. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, free chlorine and total alkalinity.

34. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, free chlorine, total chlorine, total alkalinity, nitrate, nitrite and at least one of the subgroup of lead, zinc, iron and copper.

35. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of free chlorine, total chlorine and at least one of the subgroup of lead, zinc, iron and copper.

36. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of total alkalinity, nitrate, nitrite and at least one of the subgroup of lead, zinc, iron and copper.

37. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, free chlorine, total chlorine, total alkalinity, and at least one of the subgroup of lead, zinc, iron and copper.

38. An integrated, multi-test, immersable test strip-type fluid testing device for simultaneously determining the value of each of a plurality of properties of a fluid to be tested, the fluid testing device comprising:

a test substrate; and

a plurality of test sections, located on said test substrate, each of said test sections including;

a test sub-section which exhibits a reaction color according to said value, as a result of reaction of a reagent with said fluid, said reagent being impregnated within said test sub-section prior to testing; and

a reference section located adjacent to said test sub-section, said reference section including a plurality of different reference colors and being arranged such that each of said plurality of reference colors is situated adjacent to and in contact with said test sub-section, wherein said test sub-section substantially encompasses said entire reference section having said plurality of different reference colors, such that, when said test sub-section exhibits said reaction color in accordance with a fluid property value, said value is indicated by a matching one of said reference colors which lies against said test sub-section reaction color, so as to become substantially visually merged therewith,

said device enabling fluid analysis of the test fluid by a self-contained, one-step procedure of immersion of the entire strip including both said test sub-section and said reference section, reaction during immersion and color reading of said reaction results upon retrieval from the test fluid,

wherein reading of said indicated value in each test sub-section is performed by visually matching said test sub-section reaction color with said substantially visually merged one of said different reference colors due to self-alignment therebetween,

such that said indicated value of each of the plurality of fluid properties can be simply read in a straight forward matching process with improved accuracy in simultaneous and immediate fashion,

without requiring the physical alignment of said test sub-section reaction color with said reference colors,

said indicated value of each of the plurality of multi-test fluid properties being provided in a recordable form,

thereby enabling review of an entire set of said reaction results by summary inspection,

wherein said plurality of multi-test fluid properties forms a group consisting essentially of pH, total hardness, total alkalinity and at least one of the subgroup of free chlorine and total chlorine.