Statements of Comprehensive Loss (USD $)	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Sales	$ 1,608,179	$ 1,863,773	$ 1,273,017
Sales to related parties	333,663	1,063,495	309,259
Equipment rental	129,350	110,207	0
Total revenues	2,071,192	3,037,475	1,582,276
Cost of sales	1,244,290	1,074,030	1,182,328
Cost of related party sales	260,553	618,823	318,682
Cost of equipment rental	11,788	20,073
Total cost of revenues	1,516,631	1,712,926	1,501,010
Gross margin	554,561	1,324,549	81,266
Research and development	2,364,608	1,483,659	2,429,215
Selling, general and administrative	6,203,200	5,189,561	5,130,017
Total operating costs and expenses	8,567,808	6,673,220	7,559,232
Loss from operations	(8,013,247)	(5,348,671)	(7,477,966)
Interest income	59,783	67,233	11,042
Other income (expense)	(6,208)	(3,279)	3,405
Total other income (expense)	53,575	63,954	14,447
Loss before income taxes	(7,959,672)	(5,284,717)	(7,463,519)
Income tax (provision) benefit	(988)	(800)	6,571
Net loss and comprehensive loss	$ (7,960,660)	$ (5,285,517)	$ (7,456,948)
Net loss per common share: Basic	$ (0.27)	$ (0.18)	$ (0.32)
Net loss per common share: Diluted	$ (0.27)	$ (0.18)	$ (0.32)
Weighted average number of shares outstanding: Basic	29,717,000	28,838,000	23,257,000
Weighted average number of shares outstanding: Diluted	29,717,000	28,838,000	23,257,000