Contact Info
Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf
Viscosimetry
Classification:
Viscosimetry
Citations 2
"Automated Viscometer Based On High-precision Flow Injection Analysis. 1. Apparatus For High-precision Flow, Injection Analysis"
Analyst
1983 Volume 108, Issue 1282 Pages 1-16
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Abstract:
An automated viscometer was developed by modifying an Ostwald viscometer in which the sample (~50 µL) was injected into a carrier stream flowing along a narrow-bore tube. The time taken for the sample to travel a fixed distance was directly proportional to the viscosity. The measurement took ~30 s and gave a precision of 0.2 to 0.3% for viscosities ranging from 0.2 to 190 cP. The system could also be used for continuous monitoring of a carrier stream of unknown viscosity by injecting a sample of known viscosity. The use of refractometric, spectrophotometric, photometric, dielectric and conductometric detectors was evaluated and several microcomputer systems were investigated. The temperature had to be controlled to within 0.02°C
Apparatus
Computer
Titrations
Viscosity
"Automated Viscometer Based On High-precision Flow Injection Analysis. 2. Measurement Of Viscosity And Diffusion Coefficients"
Analyst
1983 Volume 108, Issue 1282 Pages 17-32
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Betteridge, W. C. Cheng, E. L. Dagless, P. David, T. B. Goad, D. R. Deans, D. A. Newton and T. B. Pierce'include - APP/View/Elements/citation.ctp, line 40 View::_evaluate() - CORE/Cake/View/View.php, line 971 View::_render() - CORE/Cake/View/View.php, line 933 View::_renderElement() - CORE/Cake/View/View.php, line 1224 View::element() - CORE/Cake/View/View.php, line 418 include - APP/View/Techniques/view.ctp, line 52 View::_evaluate() - CORE/Cake/View/View.php, line 971 View::_render() - CORE/Cake/View/View.php, line 933 View::render() - CORE/Cake/View/View.php, line 473 Controller::render() - CORE/Cake/Controller/Controller.php, line 968 Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200 Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167 [main] - APP/webroot/index.php, line 109
Abstract:
The use of the apparatus described in Part I (Ibid, 108, 1983, 1) as a viscometer and for the measurement of diffusion coefficient has been evaluated. The effects of radius and length of the tube, sample volume and flow rate were studied. The viscosities of 15 solvents were measured. Diffusion coefficient for KMnO4 in water, ethanol and acetone were obtained.
Computer
Diffusion coefficients
Titrations
Viscosity