Thank you for your response Steve, what about the second method of measuring surface tension? As for the stalagmometer, do you think this analysis is not worthwhile/too unreliable? Peter Blokhuis --- Steve Collins <[log in to unmask]> wrote: > Stalagmometer > Surface tension has long been recognized as an > important physical characteristic > of fluids and colloids that can affect biological > processes. > Scientists sought ways to measure this phenomenon, > but reproducible results were > difficult to obtain. Two approaches, developed to > measure this subtle force, > are displayed here. > > The process of drop formation by liquids is, in > part, controlled by the surface > tension of the fluid. To determine surface tension, > the stalagmometer used a > drop > weight method, in which the number and weight of > drops were compared to those > from a reference liquid. Seemingly simple, the > stalagmometer nevertheless > required considerable skill and absolute cleanliness > for readings to be > meaningful. > > ############################################################## > TechNet Mail List provided as a free service by IPC > using LISTSERV 1.8c > ############################################################## > To subscribe/unsubscribe, send a message to > [log in to unmask] with following text in > the body: > To subscribe: SUBSCRIBE TECHNET <your full name> > To unsubscribe: SIGNOFF TECHNET > ############################################################## > Please visit IPC web site > (http://www.ipc.org/html/forum.htm) for additional > information. > If you need assistance - contact Keach Sasamori at > [log in to unmask] or > 847-509-9700 ext.5315 > ############################################################## > __________________________________________________ Do You Yahoo!? Send online invitations with Yahoo! Invites. http://invites.yahoo.com ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################