Burning cucumber leaves?

[Chuck]

What strength peroxide do you start with? Over here (UK) hydrogen peroxide available to the public is restricted is about 10% w/v (30 vol) due to use by people in homemade explosives. At work I can get 30% w/v (100 vol) if I sign an end user declaration and that needs to be treated with care.

In the US 3% is the standard but one can get 10%. I have heard that 30% is available here but I have never seen it.