Note 5 - Concentration of Revenue (Tables)

3 Months Ended

Mar. 31, 2013

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three Months Ended March 31,
(unaudited)	2013			2012
ChemFree Customer A		13	%		13	%
ChemFree Customer B		30	%		29	%
ChemFree Customer C		10	%		10	%