Hello Kathy!

With respect to your question concerning basic lab equipment ( beekers, test tubes, burners, microscopes, eye droppers, slides, petry dishes, vials, chemical jars - etc.) I have been meaning to upload, as freebies, a set of accurately detailed laboratory glassware models, ( hopefully complete with functional setups for various synthetic procedures ) for some time now. 

What I currently have modeled can be viewed in these two images:

http://www.renderosity.com/mod/gallery/index.php?image_id=838969
http://www.renderosity.com/mod/gallery/index.php?image_id=1192621

-and include such items as a classic Ainsworth analytical balance, 3-neck flask, Leibig condenser, seperatory funnel, ringstands, test tube rack, etc.

If these are of interest to you, let me know and I'll try to get on with trying to get them online ( though it may still be awhile, as I'm currently getting resettled into a new apartment, with my main work computers still torn down ). These were modelled in trueSpace, but I can export them as untextured obj files.