I wrote:

> >Can anyone tell me the name of a domestic product here in Japan that's
> >strongly alkaline in content?

Michael Cash replied:

> Certain dry cell batteries come to mind.

Yes, that might do the trick. Can you suggest one in particular? And how
would I get the alkaline out of it?

I was really thinking of something in liquid form that contains ammonia
(which can be found in some types of domestic cleaners, but I don't know
about here in Japan) or caustic soda (sometimes used in paint-stripping, but
again I don't know if there's anything in Japan that fits the bill), or
something like that.

--
John
http://rarebooksinjapan.com