[Stoves] RE: improving charcoal stoves

[Crispin Pemberton-Pigott]

Dear Dean

I can't conclude something useful from the ppm figure for CO because I don't 
know what the excess air was at the time it was measured.

>When testing charcoal we see over 1,000 ppm. Dangerous!

What matters is the completeness of the burn (the CO/CO2 ratio).  If your 
CO2 reading at the same time was 50,000 ppm or more I think you have a 
pretty clean burn, for charcoal.

I got 70,000 ppm from a JIKO, partly because the little door is too small 
(i.e. no excess air at all).  I think inside the fire it was 950,000 ppm. 
My meter choked for an hour!

Regards
Crispin