ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions. ***************************************************************************** There is one that's not too bad - you suspend it in a 50% isopropyl, 50% water formula. Outside of that formula it will stain, but inside it, it won't stain borosilicate glass (unless it has prolonged contact under magnetic pressure). I think it's from Ferrosound Ferrofluidics (603) 883-9800. I believe those are the ones in the kits. -William PS. I researched this a long time ago, so it is possible I grabbed the wrong ferrofluid bottle when responding to your question. On Nov 3, 2011, at 4:07 PM, Luke Donev wrote: > ISEN-ASTC-L is a service of the Association of Science-Technology Centers > Incorporated, a worldwide network of science museums and related institutions. > ***************************************************************************** > > Hello Brian, > > I've seen the Ferrofluid containers from the Nanoscale Informal Science Education Network kits get kicked around for years without staining the tubes. > > The kit is described: http://www.nisenet.org/catalog/programs/exploring_materials_-_ferrofluid_nanodays_08_09_10_11 > And their vendor source is listed as Teacher Source: http://www.teachersource.com/ElectricityAndMagnetism/Ferrofluid/FerrofluidPreformDisplayCell.aspx > They say it's not the same stuff as the bulk kit. > > > Luke Donev, Ph.D. > Staff Scientist > CT Science Center > 250 Columbus Blvd. > Hartford, CT 06103 > 860-520-2122 > > > > -----Original Message----- > From: Informal Science Education Network [mailto:[log in to unmask]] On Behalf Of Brian Turkett > Sent: Thursday, November 03, 2011 3:35 PM > To: [log in to unmask] > Subject: Non-staining Ferrofluid Suspension Recipes? > > ISEN-ASTC-L is a service of the Association of Science-Technology Centers > Incorporated, a worldwide network of science museums and related institutions. > ***************************************************************************** > > Does anyone have a recipe for liquids to suspend/place Ferro fluid in > where it will not stain the plastic/glass/etc. you are using? Or, has > anyone tried something and have it not work? > > > > Brian Turkett > > Spacelink Manager > > Maryland Science Center > > 601 Light St > > Baltimore MD 21230 > > Phone: 410-545-5995 > > Fax: 410-545-5974 > > [log in to unmask] > > > > > *********************************************************************** > For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. > > Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. > > The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit > http://www.lsoft.com/LISTSERV-powered.html. > > To remove your e-mail address from the ISEN-ASTC-L list, send the > message SIGNOFF ISEN-ASTC-L in the BODY of a message to > [log in to unmask] > > *********************************************************************** > For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. > > Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. > > The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit > http://www.lsoft.com/LISTSERV-powered.html. > > To remove your e-mail address from the ISEN-ASTC-L list, send the > message SIGNOFF ISEN-ASTC-L in the BODY of a message to > [log in to unmask] William Katzman Program Leader LIGO Science Education Center "Inspiring Science" [log in to unmask] (225) 686-3134 *********************************************************************** For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org. Check out the latest case studies and reviews on ExhibitFiles at www.exhibitfiles.org. The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit http://www.lsoft.com/LISTSERV-powered.html. To remove your e-mail address from the ISEN-ASTC-L list, send the message SIGNOFF ISEN-ASTC-L in the BODY of a message to [log in to unmask]