Balance Sheets (USD $)	Aug. 31, 2012	Aug. 31, 2011
Cash and cash equivalents	$ 11,102,508	$ 17,135,968
Accounts receivable, net of allowance for doubtful accounts of $20,000	289,587	397,264
Related party trade accounts receivable	33,257	408,323
Inventories, net	2,403,957	2,406,214
Other current assets	120,069	121,148
Total current assets	13,949,378	20,468,917
Property and equipment, net	1,412,639	1,445,897
Patents, net	4,032	25,092
Total assets	15,366,049	21,939,906
Accounts payable	195,754	301,936
Accrued liabilities	424,698	332,004
Customer deposits	24,980
Deferred revenue - current portion	96,865	42,214
Total current liabilities	742,297	676,154
Deferred revenue - net of current portion	126,420	192,158
Total liabilities	868,717	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, 29,777,522 and 29,686,154 shares issued, respectively	29,778	29,686
Additional paid-in capital	51,845,035	50,458,729
Treasury stock, 24,331 shares at cost	(234)	(234)
Accumulated deficit	(37,377,247)	(29,416,587)
Total stockholders' equity	14,497,332	21,071,594
Total liabilities and stockholders' equity	$ 15,366,049	$ 21,939,906