[Stoves] [Biochar] Embers from Three Stone as Biochar - Who has done this?

[Ronal Larson]

Hugh and ccs

	Thanks.  Just what I was looking for.

	First clarifying question. Is your dirty hand test directly related to the veyr steep rise in surface area (between 450 and 550 C) shown in the Lehmann diagram retained below. Or different physical effects?  

	 Could biochar users say they always want to be above 550?  Or just “usually”/

	one more below.

> On Apr 2, 2021, at 7:03 PM, Hugh McLaughlin via groups.io <http://groups.io/> <wastemin1=verizon.net at groups.io <mailto:wastemin1=verizon.net at groups.io>> wrote:
> 
> Hello Many Different Groups, with many different priorities,
> 
> Ron has kicked several issues into my court to see if I will take the bait. I will to the extent of offering my thoughts, but I will decline the offer to convince the world I am right. You can lead a horse to water - the rest is up to the horse and whether it is sufficiently thirsty.
> 
> When it comes to biochar quality - it is easier to assess the material after it is made and cooled down than to predict/indemnify it based on how it was made or deserves to be good. It is like food: It is good unless it is bad for one of many reasons. The most basic criteria for biochar is the "Soap Test" - good char will not leave a black coating on the hands that will not be removed by cold water (mostly removed - it is a qualitative criteria and requires experience with other biochars. If soap is required to remove the biochar from one's hands, that is because of tars and the biochars is inferior and/or charcoal.
> 
> Good biochar does not have any significant burnt odor - or taste! - and wets out when dropped into water after being ground into a powder. Oh - if is friable - easily crushes into smaller particles and even collapses into a powder. Additional pluses, but not necessary, are a silvery reflection.
> 
	RWL2:  Can you comment further on the term “wets out"

	<snip>


	Ron



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