In May, InnoTech Alberta at Vegreville was close to finishing analyses of six types of biochar derived from nut or wood sources and submitted by the U.S. manufacturer, Cool Planet. Samples were tested to detect any toxic substances that could be harmful to animals, people or the environment, as well as the suitability of biochar as an animal feed supplement. This information will be needed to establish standards for biochar products and for Canadian Food Inspection Agency approval for its use as a cattle feed ingredient rather than simply as a colourant in minerals.( huh?)