Good source for Formalin?

[krullshards]

Here's a link that my brother-in-law sent me. We were talking about formalin and how I had received some to treat my fish and he had just read this recent article on formaldehyde.. Apparently, the risks of formaldehyde has been over-inflated, according to this:

http://www.science20.com/frank_schnell/formaldehyde_fact_fiction-167829