[Shop-talk] Where to get glycerin?

[arvidj at visi.com (Arvid Jedlicka)]

Ok, shop content ...

I have a really slow leak somewhere in the plumbing on my compressor. I'd 
like to make a mixture of soap and glycerin to spray on the fittings but 
have not been able to find a source for the glycerin. Walgreens and CVS list 
it on their websites but do not have pure glycerin in the stores. Does 
anyone have any suggestions on where else I might look for this great bubble 
making liquid?

Thanks,
Arvid