Forgive me for being picky, but were those US or imperial gallons?

On Wed, 19 Apr 2006 22:24:25 +0200, Reka wrote:

...and it's late. If I want to soak my orchids in Physan 20 solution and
need 2 tsp. of 20% Physan per gallon of water,how many tsp. do I need of
50% Physan for 5 liters? (I can get 50% benzalkonium chloride here which
should be relatively similar, if not equal, to Physan -
http://en.wikipedia.org/wiki/Benzalkonium_chloride)

--
Dave Gillingham
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