Condensed Balance Sheets (USD $)	Nov. 30, 2011	Aug. 31, 2011
Cash and cash equivalents	$ 15,728,584	$ 17,135,968
Accounts receivable, net of allowance for doubtful accounts of $20,000	418,527	397,264
Related party trade accounts receivable	163,497	408,323
Inventories, net	2,463,269	2,406,214
Other current assets	97,824	121,148
Total current assets	18,871,701	20,468,917
Property and equipment, net	1,443,105	1,445,897
Patents, net	19,827	25,092
Total assets	20,334,633	21,939,906
Accounts payable	171,412	301,936
Accrued liabilities	265,934	332,004
Deferred revenue - current portion	79,319	42,214
Total current liabilities	516,665	676,154
Deferred revenue - net of current portion	144,724	192,158
Total liabilities	661,389	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	50,747,784	50,458,729
Treasury stock, 24,331 shares at cost	(234)	(234)
Accumulated deficit	(31,103,992)	(29,416,587)
Total stockholders' equity	19,673,244	21,071,594
Total liabilities and stockholders' equity	$ 20,334,633	$ 21,939,906