Condensed Balance Sheets (USD $)	Feb. 29, 2012	Aug. 31, 2011
Cash and cash equivalents	$ 14,420,068	$ 17,135,968
Accounts receivable, net of allowance for doubtful accounts of $20,000	98,197	397,264
Related party trade accounts receivable	164,044	408,323
Inventories, net	2,482,853	2,406,214
Other current assets	124,468	121,148
Total current assets	17,289,630	20,468,917
Property and equipment, net	1,466,487	1,445,897
Patents, net	14,562	25,092
Total assets	18,770,679	21,939,906
Accounts payable	251,406	301,936
Accrued liabilities	405,466	332,004
Deferred revenue - current portion	94,827	42,214
Total current liabilities	751,699	676,154
Deferred revenue - net of current portion	156,879	192,158
Total liabilities	908,578	868,312
Commitments and contingencies
Preferred stock, $.001 par value; 10,000,000 shares authorized, no shares issued and outstanding
Common stock, $.001 par value, 80,000,000 shares authorized, 29,686,154 shares issued	29,686	29,686
Additional paid-in capital	51,039,239	50,458,729
Treasury stock, 24,331 shares at cost	(234)	(234)
Accumulated deficit	(33,206,590)	(29,416,587)
Total stockholders' equity	17,862,101	21,071,594
Total liabilities and stockholders' equity	$ 18,770,679	$ 21,939,906