US3876378A - Analytic device utilizing a reaction-sensitive chemical product - Google Patents

Analytic device utilizing a reaction-sensitive chemical product Download PDF

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Publication number
US3876378A
US3876378A US355087A US35508773A US3876378A US 3876378 A US3876378 A US 3876378A US 355087 A US355087 A US 355087A US 35508773 A US35508773 A US 35508773A US 3876378 A US3876378 A US 3876378A
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United States
Prior art keywords
vessel
enclosure
disc
groove
side walls
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Expired - Lifetime
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US355087A
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English (en)
Inventor
Paul A F Montagnon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Analytab Products Inc
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Analytab Products Inc
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Filing date
Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/508—Containers for the purpose of retaining a material to be analysed, e.g. test tubes rigid containers not provided for above

Definitions

  • the device includes a generally tubular, upright vessel open at its upper end and having a closed lower end.
  • a flange extending around the interior of the vessel closely above its lower end defines a groove about the lower interior region of the vessel.
  • An annular disc of absorbent material impregnated with the chemical product rests against the lower end of the vessel with its outer peripheral edge snugly received within the groove so that the disc is prevented from displacement.
  • a central opening may be provided within the disc to permit trapped air to escape when test liquid is added to the vessel.
  • This invention relates to an analytic device of the type comprising a vessel in which is mounted a piece of absorbent material impregnated with an indicating reagent which undergoes a change, typically in color, when acted upon by a sample of liquid under analysis having a particular property to which the reagent is sensitive.
  • one common form of test employs analysis materials comprising absorbent material (typically paper) impregnated with chemical products sensitive to the chemical or biological analysis being performed.
  • Such products include reagents which change color dependent upon acidity or alkalinity, or upon the presence or absence of a particular chemical or biological substance to which they are sensitive.
  • the user may be supplied with the impregnated material in disc or band form and with a tube in which the impregnated material is to be mounted, after which the liquid to be tested is introduced to the tube and applied to the material.
  • the present invention provides an analytic device utilizing a reaction-sensitive chemical product, intended to obviate or minimize problems of the type previously discussed.
  • an analytic device constructed in accordance with the present invention includes a generally tubular upright vessel open at its upper end and having a closed lower end.
  • An internal flange defines a groove extending peripherally about the interior of the vessel adjacent its lower end.
  • a disc of absorbent material impregnated with the sensitive chemical product rests against the lower end of the vessel with its outer peripheral edge snugly received within the groove.
  • FIG. 1 is a cross sectional, side view of an analytic device constructed in accordance with the preferred embodiment of the invention.
  • FIGS. 2-4 are cross sectional side views showing three alternative embodiments of the construction of the analytic device.
  • FIG. 1 of the drawings an analytic device constructed in accordance with the preferred embodiment of the invention is there shown.
  • the device comprises an upright vessel 10 having an open upper end, a vertical tubular sidewall and a closed, flat horizontal lower end 11.
  • An annular flange 12 fixedly secured to the vertical tubular sidewall of the vessel 10 extends peripherally around the interior thereof spaced closely above the lower end 11.
  • the flange 12 and the lower end 11 together define a peripherally extending groove adjacent the lower end of the vessel and this groove snugly receives the outer peripheral edge of a flat horizontal disc 13.
  • the disc 13 is made of absorbent material, such as paper, impregnated with a chemical product suitable for the contemplated analysis.
  • the chemical product may for example be a reagent for metering the glucose in urine, or measuring an attack on protein by an enzyme.
  • the disc 13 extends from closely adjacent the vertical sidewall of the vessel 10 inwardly of the flange 12 so that portions projecting inwardly of the flange are exposed to view. As the material to be tested is introduced in liquid form, the disc 13 will undergo a color or other change if the test material meets the required condition for activation of the chemical product with which the disc is impregnated and the change will be visible to the user.
  • the flange 12 may be made of transparent material so that the color change of the disc may be more readily observed.
  • test liquid may readily be introduced without difficulty.
  • the mounting of the disc with its peripheral edge anchored within a groove, defined by the flange l2 and the lower end 11, ensures that the disc will not tend to be displaced upwardly within the vessel by flotation but will be retained in position.
  • the disc 13 may be provided with a central opening which permits the free escape of air from beneath the disc so that air bubbles do not tend to become entrapped underneath it.
  • the vessel 20 is made in two parts, a dish shaped lower end 5 containing an upwardly facing horizontal rim about its periphery and an open-ended upper tube containing a corresponding horizontal rim about its lower periphery.
  • the flange comprises a plate 24 having a central opening with the outer portions of the plate being mounted between the rims of the upper and lower parts of the vessel which are fixedly connected together along an annular seam 6 by any conventional bonding or adhesive process.
  • the disc 13 is mounted between the underside of the flange and the lower end.
  • a third embodiment shown in FIG. 3 is generally similar to the second embodiment shown in FIG. 2 but with the difference that the lower end is flat and that the plate 14 configured as an inverted dish to provide a recessed space within the disc 13 is received.
  • the vessel 40 is of upwardly and outwardly flared configuration and nestingly receives a correspondingly configured inner cup 7.
  • the disc 13 is mounted between the lower ends of the cup and the vessel and extends radially inwardly of a central opening through the lower end of the inner cup.
  • the vessel 40 and the inner cup 7 are provided with overlapping horizontal flanges connected together along a seam line 8.
  • vessels may be of the generally round cross section as disclosed or may, alternatively, be of elongate, irregular, or any other desired cross section.
  • An analysis vessel for holding fast therein a member impregnated with a reagent for analyzing a substance in a liquid to be placed in said vessel comprising:
  • impregnated member may be at least par tially engaged in said groove and thereby anchored within said enclosure.
  • tubular enclosure having a substantially circular cross-section b. said groove being of annular configuration and extending about the entire periphery of said enclosure for receiving and engaging therein the outer periphery of a disc-shaped impregnated member.
  • the analysis vessel of claim 1 further comprising:
  • said bottom of said enclosure being a member distinct from said side walls, said bottom member being dished downwardly over its central portion, defining a relieved portion therein, and
  • said means for defining a groove comprising a substantially flat flange member sandwiched between said side walls and said bottom member, said flange member having an aperture in its central region over a portion of said relieved portion of said bottom member forming a flange extending inwardly from about the periphery of said side walls over a portion of said bottom member.
  • the analysis vessel of claim 1 further comprising:
  • said bottom of said enclosure being a substantially flat member distinct from said side walls
  • said means for defining said groove comprising a flange member sandwiched between said side walls and said bottom member, said flange member being relieved upwardly over its central portion defining with said bottom member a groove about the bottom interior of said enclosure, said flange member also having an aperture in its central region.
  • said means for defining a groove comprising a liner having a configuration substantially corresponding to that of said enclosure and being nestable within said enclosure in a position allowing spacing between the bottoms of said enclosure and said liner, said liner additionally having an aperture in its bottom, whereby the impregnated member can be held in the space between said bottoms of said enclosure and said liner, said aperture permitting communication between said impregnated member and the interior of said liner.
  • An analytic device utilizing a chemical product for analyzing a substance in a liquid to be placed in said device, the device comprising:
  • a. a generally tubular vessel having side walls and a bottom;
  • a disc of absorbent material impregnated with the chemical product said disc being disposed within the vessel and resting against said bottom of said vessel with an outer peripheral edge of said disc snugly received within said groove thereby anchoring said disc against displacement relative to said vessel.
  • analytic device wherein the means defining the groove being a flange forming an opening adjacent the center portion of the vessel and the disc of absorbent material having an aperture therein underlying the opening of the flange and providing a cavity within which the liquid with the substance to be analyzed can be viewed.
  • An analysis vessel for holding fast therein a portion of material including a reagent for analyzing a substance in a liquid to be placed in said vessel comprising:
  • portion of material may be at least partially engaged in said groove and thereby anchored within said enclosure.
  • An analytic device utilizing a chemical product for analyzing a substance in a liquid to be placed in said device, the device comprising: 7
  • said disc being disposed within the vessel and resting against said bottom of said vessel with an outer peripheral edge of said disc snugly received within said groove thereby anchoring said disc against displacement relative to said vessel.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
US355087A 1972-05-18 1973-04-27 Analytic device utilizing a reaction-sensitive chemical product Expired - Lifetime US3876378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7218386A FR2185209A5 (enrdf_load_stackoverflow) 1972-05-18 1972-05-18

Publications (1)

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US3876378A true US3876378A (en) 1975-04-08

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US355087A Expired - Lifetime US3876378A (en) 1972-05-18 1973-04-27 Analytic device utilizing a reaction-sensitive chemical product

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US (1) US3876378A (enrdf_load_stackoverflow)
FR (1) FR2185209A5 (enrdf_load_stackoverflow)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071320A (en) * 1976-04-27 1978-01-31 Martin Korbin Device for the quantitative determination of impurities, especially bacteria, on flat surfaces
US4125376A (en) * 1977-04-22 1978-11-14 The United States Of America As Represented By The Secretary Of The Army Method for detecting water pollutants
US4147752A (en) * 1977-01-14 1979-04-03 Kommandiittihytio Finnpipette Osmo A. Souvaniemi Form piece for apparatuses used for immunoassays and enzyme reactions
US4239853A (en) * 1979-01-22 1980-12-16 Bradley Rex L Antibiotic testing method and apparatus having a channelized reservoir
EP0490447A1 (en) * 1990-12-10 1992-06-17 Financieringsmaatschappij Sparrendaal I B.V. A disposable liquid testing device
US5440919A (en) * 1994-08-29 1995-08-15 Spectronics Corporation Method of introducing leak detection dye into an air conditioning or refrigeration system
DE19506802A1 (de) * 1995-02-27 1996-08-29 Karl Reichart Reagensträger zur Zugabe von Reagentien
US6070455A (en) * 1995-07-21 2000-06-06 Bright Solutions, Inc. Leak detection additives
USRE36951E (en) * 1994-08-29 2000-11-14 Spectronics Corporation Method of introducing leak detection dye into an air conditioning or refrigeration system including solid or semi-solid fluorescent dyes
US6314907B1 (en) 1999-08-02 2001-11-13 Optiva Device use indicator
US20020096643A1 (en) * 1996-02-08 2002-07-25 Bright Solutions, Inc., A Michigan Corporation Portable light source and system for use in leak detection
US6557484B1 (en) * 2000-10-04 2003-05-06 Jimmy Engelman Device for sugar and/or caffeine content indication
DE10164834B4 (de) * 2001-12-04 2004-09-16 Roche Diagnostics Gmbh Aufnahme für Proben und Komplettfolie zum Aufnehmen von Proben
US20050272844A1 (en) * 2004-06-02 2005-12-08 Westman Morton A Leak detection materials and methods
US7319037B1 (en) 2002-05-14 2008-01-15 Orit Albeck-Marom Fluid tester and method of use
WO2012087342A1 (en) * 2010-12-22 2012-06-28 Abramson Michael T Apparatus for detection of a contaminated beverage and method for producing same
US20120160725A1 (en) * 2010-12-22 2012-06-28 Abramson Michael T System and method for detection of a contaminated beverage
GB2493763A (en) * 2011-08-18 2013-02-20 Univ Cranfield Microplates with Enhanced Immobilisation capabilities
US9285352B2 (en) 2010-12-22 2016-03-15 Drinksavvy, Inc. System and method for detection of a contaminated beverage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476515A (en) * 1966-04-26 1969-11-04 Du Pont Analytical test pack and process for analysis
US3477821A (en) * 1967-12-26 1969-11-11 Xerox Corp Chemical package
US3582283A (en) * 1970-03-25 1971-06-01 Xerox Corp Chemical package
US3689224A (en) * 1966-04-13 1972-09-05 Westinghouse Electric Corp Chemical contaminant detection sampler
US3740196A (en) * 1971-03-30 1973-06-19 Us Army Chemical spot test system
US3768974A (en) * 1971-03-22 1973-10-30 Sterilizer Control Royalties Disposable colorimetric indicator device for measuring the concentration of chlorine in water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689224A (en) * 1966-04-13 1972-09-05 Westinghouse Electric Corp Chemical contaminant detection sampler
US3476515A (en) * 1966-04-26 1969-11-04 Du Pont Analytical test pack and process for analysis
US3477821A (en) * 1967-12-26 1969-11-11 Xerox Corp Chemical package
US3582283A (en) * 1970-03-25 1971-06-01 Xerox Corp Chemical package
US3768974A (en) * 1971-03-22 1973-10-30 Sterilizer Control Royalties Disposable colorimetric indicator device for measuring the concentration of chlorine in water
US3740196A (en) * 1971-03-30 1973-06-19 Us Army Chemical spot test system

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071320A (en) * 1976-04-27 1978-01-31 Martin Korbin Device for the quantitative determination of impurities, especially bacteria, on flat surfaces
US4147752A (en) * 1977-01-14 1979-04-03 Kommandiittihytio Finnpipette Osmo A. Souvaniemi Form piece for apparatuses used for immunoassays and enzyme reactions
US4125376A (en) * 1977-04-22 1978-11-14 The United States Of America As Represented By The Secretary Of The Army Method for detecting water pollutants
US4239853A (en) * 1979-01-22 1980-12-16 Bradley Rex L Antibiotic testing method and apparatus having a channelized reservoir
EP0490447A1 (en) * 1990-12-10 1992-06-17 Financieringsmaatschappij Sparrendaal I B.V. A disposable liquid testing device
USRE36951E (en) * 1994-08-29 2000-11-14 Spectronics Corporation Method of introducing leak detection dye into an air conditioning or refrigeration system including solid or semi-solid fluorescent dyes
US5440919A (en) * 1994-08-29 1995-08-15 Spectronics Corporation Method of introducing leak detection dye into an air conditioning or refrigeration system
US5650563A (en) * 1994-08-29 1997-07-22 Spectronics Corporation Method of introducing leak detection dye into an air conditioning or refrigeration system including solid or semi-solid fluorescent dyes
DE19506802A1 (de) * 1995-02-27 1996-08-29 Karl Reichart Reagensträger zur Zugabe von Reagentien
US6070455A (en) * 1995-07-21 2000-06-06 Bright Solutions, Inc. Leak detection additives
US20020096643A1 (en) * 1996-02-08 2002-07-25 Bright Solutions, Inc., A Michigan Corporation Portable light source and system for use in leak detection
US6101867A (en) * 1998-02-05 2000-08-15 Bright Solutions, Inc. Dye concentrate
US6314907B1 (en) 1999-08-02 2001-11-13 Optiva Device use indicator
US6557484B1 (en) * 2000-10-04 2003-05-06 Jimmy Engelman Device for sugar and/or caffeine content indication
DE10164834B4 (de) * 2001-12-04 2004-09-16 Roche Diagnostics Gmbh Aufnahme für Proben und Komplettfolie zum Aufnehmen von Proben
US7319037B1 (en) 2002-05-14 2008-01-15 Orit Albeck-Marom Fluid tester and method of use
US20050272844A1 (en) * 2004-06-02 2005-12-08 Westman Morton A Leak detection materials and methods
US7943380B2 (en) 2004-06-02 2011-05-17 Bright Solutions, Inc. Leak detection materials and methods
US8834946B2 (en) 2010-12-22 2014-09-16 Drinksavvy, Inc. System and method for detection of a contaminated beverage
US20120160725A1 (en) * 2010-12-22 2012-06-28 Abramson Michael T System and method for detection of a contaminated beverage
WO2012087342A1 (en) * 2010-12-22 2012-06-28 Abramson Michael T Apparatus for detection of a contaminated beverage and method for producing same
US8920857B2 (en) 2010-12-22 2014-12-30 Michael T. Abramson System and method for detection of a contaminated beverage
US9285352B2 (en) 2010-12-22 2016-03-15 Drinksavvy, Inc. System and method for detection of a contaminated beverage
US9528973B2 (en) 2010-12-22 2016-12-27 Drinksavvy, Inc. System and method for detection of a contaminated beverage
US9989509B2 (en) 2010-12-22 2018-06-05 Drinksavvy, Inc. System and method for detection of a contaminated beverage
US10254266B2 (en) 2010-12-22 2019-04-09 Drinksavvy, Inc. System and method for detection of a contaminated beverage
US10274475B2 (en) 2010-12-22 2019-04-30 Drinksavvy, Inc. System and method for detection of a contaminated beverage
GB2493763A (en) * 2011-08-18 2013-02-20 Univ Cranfield Microplates with Enhanced Immobilisation capabilities

Also Published As

Publication number Publication date
FR2185209A5 (enrdf_load_stackoverflow) 1973-12-28

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