Hikergirl. I was curious and did a little research.. apparently some of these things were common in past and are still used by people that haven't updated their methods...
http://www.umext.maine.edu/onlinepubs/htmpubs/7038.htm"Warning: Don’t use paraformaldehyde pellets. In the past, paraformaldehyde pellets were recommended for use in tap holes; some out-of-date sugaring manuals still suggest their use. Research shows that the use of paraformaldehyde pellets can damage the trees, so they are now illegal. Similarly, the use of denatured alcohol as a disinfectant for tapholes is also illegal in Maine."
Syrup recalls due to lead contamination:
http://www.inspection.gc.ca/english/corpaffr/recarapp/2004/20040507e.shtmlAnd here's an Ontario Government publication about reducing lead in maple syrup:
http://www.omafra.gov.on.ca/english/crops/facts/ms_lead.htmSo what it looks like to me is that there are best practices, and then there are good meaning people using equipment that's been used for years that appears to be in good working order, which may have been manufactured before materials were changed over (mid 90's for most of them). I know from looking at the photos in the last link that the ones I grew up using were the ones indicated as now considered dangerous (not stainless steel) and would therefore have contributed lead to our maple syrup.
Like with many things, knowing your grower is a great way to make sure you are consuming high grade foods! I'm not meaning to be argumentative in any way here... I was just wondering if it really was the case that none of this was true where I found it.
Cheers,
Sheryl