JCE Online Journal of Chemical Education
 | Subscriptions  | Software Orders  | Support  | Contributors  | Advertisers  | 

JCE Print
   Current Issue
 Previous Issues
 Supplements
 Search JCE Index

JCE Digital Library
   DigiDemos
 QBank
 SymMath
 WebWare

JCE Software
   Latest Releases
 Software & Video
 Downloads
 Support

Only@JCE Online
   JCE Online Store
 JCE HS CLIC
 JCE Discussion Forums
   Biographical Snapshots
 ChemEd Resource Shelf
 Featured Molecules
 Hal's Picks
 Project Chemlab
 Reviewed WWW Sites
 "Web-Ed" Articles

About JCE
   Features
 Publications
 Operations
 Outreach
 Contact Us


  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > April  >
In the Laboratory
An Apparatus for Fast Dilution
V. P. Boiko
Institute of Macromolecular Chemistry, National Academy of Sciences, 48 Kharkov Shaussee, Kiev, 253160, Ukraine
Cover
April 1997
Vol. 74 No. 4
p. 439
Abstract
An apparatus for fast dilution permitting unlimited dilution of the solution in the same vessel is described. This was achieved by using a siphon to remove part of the solution from the dilution vessel. Availability of a siphon provides strictly constant solution volume in the vessel after evacuation of excess solution by extra pressure. By virtue of subsequent dilution of a solution it can achieve any low solution concentration. The apparatus is especially convenient at simultaneously measuring the concentration dependent solution properties, e. g., for calibration curve plotting or for determining intrinsic values of physical properties of a solute. Using the apparatus described decreases the time of dilution and property measuring solutions and labor expenditures. The apparatus has a number of other advantages. Accuracy of measurements greatly increases especially at very high dilution. The degree of dilution is easily regulated; simultaneous measurements of two or more properties of the same solution are possible; mixtures of liquids of variable composition are quickly prepared. The versions of the apparatus for measuring limiting equivalent conductivity and polymer intrinsic viscosity are proposed.
More Information
*  Citation
 Boiko, V. P. J. Chem. Educ. 1997 74 439.
*  Keywords
*  History
 Created:
Last Updated:		 July 28, 1999
June 23, 2005
<< Previous Article Table of Contents Next Article >>
  Home > JCE Print > Journal of Chemical Education > Issues > 1997 > April > Page 439


Subscriptions
 Subscription Info
 Order Forms

JCE HS CLIC

Our Secondary School editors work hard to distill all the JCE materials to produce a fraction of particular interest to high school teachers. We call it CLIC.
 JCE HS CLIC

Contributions Welcome
JCE welcomes your submission
 Contributors' Corner

Advertisers
In recent years we have worked hard to better match our advertisers with our readers. When shopping for chemistry education materials, visit our advertisers' WWW sites first.
 Recent Advertisers

Be An Ambassador
Take JCE along on your outreach missions. Copies of the Journal, guest access to JCE Online, our publications catalog, and more are available for your participants.
 Outreach with JCE

Comments to
jceonline@chem.wisc.edu		 Copyright © Division of Chemical Education, Inc., American Chemical Society.
All rights reserved.