Note 7 - Segment Information (Detail) - Segment Information (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2012
Revenue from external customers	$ 306,522	$ 452,943	$ 1,208,434	$ 1,344,694
Segment operating income (loss)	(191,857)	(33,754)	(294,191)	(53,695)
Total assets	1,140,283		1,140,283		1,336,450
Chemical [Member]
Revenue from external customers	266,061	175,127	814,999	720,363
Segment operating income (loss)	5,716	24,381	105,780	77,930
Total assets	737,687		737,687		540,349
Electronics [Member]
Revenue from external customers	40,461	277,816	393,435	624,331
Segment operating income (loss)	(197,573)	(58,135)	(399,971)	(131,625)
Total assets	$ 402,596		$ 402,596		$ 796,101