FR2337879A1 - Test material for determining density or osmolarity - comprising microcapsules contg. dye - Google Patents

Test material for determining density or osmolarity - comprising microcapsules contg. dye

Info

Publication number
FR2337879A1
FR2337879A1 FR7700427A FR7700427A FR2337879A1 FR 2337879 A1 FR2337879 A1 FR 2337879A1 FR 7700427 A FR7700427 A FR 7700427A FR 7700427 A FR7700427 A FR 7700427A FR 2337879 A1 FR2337879 A1 FR 2337879A1
Authority
FR
France
Prior art keywords
dye
liq
osmolarity
microcapsules
density
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7700427A
Other languages
French (fr)
Other versions
FR2337879B1 (en
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.)
Bayer Corp
Original Assignee
Miles Laboratories Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US05/647,416 external-priority patent/US4015462A/en
Priority claimed from US05/716,962 external-priority patent/US4108727A/en
Application filed by Miles Laboratories Inc filed Critical Miles Laboratories Inc
Publication of FR2337879A1 publication Critical patent/FR2337879A1/en
Application granted granted Critical
Publication of FR2337879B1 publication Critical patent/FR2337879B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
    • G01N13/04—Investigating osmotic effects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/19—Halogen containing

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Abstract

Test materials for determining the density or osmolarity of a liq. sample comprises dye-filled microcapsules whose walls consist of an osmotically rupturable semipermeable polymer membrane. The dye-filled microcapsules are pref. polyamide capsules produced by interfacial polycondensation of a polyamine with a polyfunctional acyl halide in a soln. contg. the dye (esp Evans blue.) The density of the encapsulated soln. should be greater than that of the liq. to be tested. The materials can be used, e.g., in brewing, urine analysis and water purification. The microcapsules release the dye when immersed in the test liq., and the extent to which the dye is release is a function of the osmolarity of the liq. The results can be read off simply by comparison with a colour chart or by photometry.
FR7700427A 1976-01-08 1977-01-07 Test material for determining density or osmolarity - comprising microcapsules contg. dye Granted FR2337879A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/647,416 US4015462A (en) 1976-01-08 1976-01-08 Device and method for the determination of the specific gravity or osmolality of a liquid
US05/716,962 US4108727A (en) 1976-08-23 1976-08-23 Method, composition and device for determining the specific gravity or osmolality of a liquid

Publications (2)

Publication Number Publication Date
FR2337879A1 true FR2337879A1 (en) 1977-08-05
FR2337879B1 FR2337879B1 (en) 1980-08-08

Family

ID=27095152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7700427A Granted FR2337879A1 (en) 1976-01-08 1977-01-07 Test material for determining density or osmolarity - comprising microcapsules contg. dye

Country Status (9)

Country Link
JP (1) JPS6046374B2 (en)
AR (1) AR210631A1 (en)
BR (1) BR7700051A (en)
DE (1) DE2700297C3 (en)
ES (1) ES454818A1 (en)
FR (1) FR2337879A1 (en)
IN (1) IN155746B (en)
IT (1) IT1069806B (en)
SE (1) SE436932B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092465A (en) * 1960-03-25 1963-06-04 Miles Lab Diagnostic test device for blood sugar
US3092463A (en) * 1959-11-02 1963-06-04 Miles Lab Stable blood detecting composition
US3092464A (en) * 1959-11-02 1963-06-04 Miles Lab Blood detecting composition

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092463A (en) * 1959-11-02 1963-06-04 Miles Lab Stable blood detecting composition
US3092464A (en) * 1959-11-02 1963-06-04 Miles Lab Blood detecting composition
US3092465A (en) * 1960-03-25 1963-06-04 Miles Lab Diagnostic test device for blood sugar

Also Published As

Publication number Publication date
IN155746B (en) 1985-03-02
JPS5286366A (en) 1977-07-18
AR210631A1 (en) 1977-08-31
AU2013476A (en) 1978-04-20
SE436932B (en) 1985-01-28
DE2700297A1 (en) 1977-07-14
DE2700297C3 (en) 1979-02-15
ES454818A1 (en) 1978-01-01
JPS6046374B2 (en) 1985-10-15
FR2337879B1 (en) 1980-08-08
SE7700075L (en) 1977-07-09
BR7700051A (en) 1977-09-06
IT1069806B (en) 1985-03-25
DE2700297B2 (en) 1978-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse