Document Detail


Identification of a previously undetected source of systematic error in capillary viscometry measurements.
MedLine Citation:
PMID:  18699345     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A new analysis of the factors affecting the driving head within a capillary viscometer has identified a previously undetected source of error due to surface tension. In contrast to the well-known capillary rise correction to the effective driving head, this additional effect requires that a correction be made to the apparent head of liquid. Calculations show that this source of error may be responsible for deviations in experimental results as large as 1%. A new calibration equation which compensates for both surface tension effects is recommended.
Authors:
G D Wedlake; J H Vera; G A Ratcliff
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  50     ISSN:  0034-6748     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  1979 Jan 
Date Detail:
Created Date:  2008-08-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  93     Citation Subset:  -    
Affiliation:
Department of Chemical Engineering, University of Alberta, Edmonton, Alberta T6G 2G6 CanadaDepartment of Chemical Engineering, McGill University, Montreal, Quebec H3A 2A7 Canada.
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