GB1219555A - Colorimetric reagent - Google Patents

Colorimetric reagent

Info

Publication number
GB1219555A
GB1219555A GB3484/69A GB348469A GB1219555A GB 1219555 A GB1219555 A GB 1219555A GB 3484/69 A GB3484/69 A GB 3484/69A GB 348469 A GB348469 A GB 348469A GB 1219555 A GB1219555 A GB 1219555A
Authority
GB
United Kingdom
Prior art keywords
solution
urea nitrogen
determining
jan
colour developer
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.)
Expired
Application number
GB3484/69A
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.)
Pfizer Inc
Original Assignee
Pfizer Inc
Charles Pfizer and Co 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
Application filed by Pfizer Inc, Charles Pfizer and Co Inc filed Critical Pfizer Inc
Publication of GB1219555A publication Critical patent/GB1219555A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/62—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving urea
    • 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
    • Y10T436/17—Nitrogen containing
    • Y10T436/171538—Urea or blood urea nitrogen

Abstract

1,219,555. Determining blood urea nitrogen. CHAS. PFIZER & CO. Inc. 21 Jan., 1969 [23 Jan., 1968], No. 3484/69. Heading B1X. A colour developer solution for use in determining urea nitrogen in blood contains about 0.185% w/v diacetyl monoxine, about 0.03% w/v thiosemicarbazide and about 0.4% w/v ethylene diamine tetraacetic acid, the solution having a pH of 6.5 to 7.5. In determining urea nitrogen, an aqueous solution containing about 0.0025% w/v of FeCl 3 .6H 2 O, about 0.05% v/v of 85% H 3 PO 4 and about 7.6% v/v of 95% H 2 SO 4 and a sample of serum to be tested are mixed, the colour developer solution is added and the resulting mixture is heated at about 100‹C for about 10 minutes and cooled. The optical density of the solution is measured at 515 to 525 mu.
GB3484/69A 1968-01-23 1969-01-21 Colorimetric reagent Expired GB1219555A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69977068A 1968-01-23 1968-01-23

Publications (1)

Publication Number Publication Date
GB1219555A true GB1219555A (en) 1971-01-20

Family

ID=24810840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3484/69A Expired GB1219555A (en) 1968-01-23 1969-01-21 Colorimetric reagent

Country Status (2)

Country Link
US (1) US3511611A (en)
GB (1) GB1219555A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732077A (en) * 1971-10-29 1973-05-08 Damon Corp Method and composition for determining bun
US3915643A (en) * 1973-07-12 1975-10-28 Pierce Chemical Co Determination of salicylate
JPS5240239B2 (en) * 1973-09-18 1977-10-11
US3986834A (en) * 1975-06-04 1976-10-19 Becton, Dickinson And Company Method for detecting blood urea nitrogen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1202381A (en) * 1958-05-14 1960-01-11 Roussel Uclaf Reagent for the determination of urea
US3145086A (en) * 1960-05-05 1964-08-18 Miles Lab Diagnostic composition
USRE26125E (en) * 1962-05-08 1966-12-13 Reagents and analysis of nitrogen

Also Published As

Publication number Publication date
US3511611A (en) 1970-05-12

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