Condensed Statements of Cash Flows (USD $)	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net loss	$ (361,247)	$ (254,385)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	229,972	150,882
Stock-based compensation expense related to stock options	28,071	30,789
Provision for doubtful accounts, net	(4,000)	(11,500)
Provision for inventory obsolescence, net	9,000	(62,000)
Change in operating assets and liabilities:
Accounts receivable	(41,145)	354,811
Inventories	129,317	78,548
Prepaid expenses and other assets	(69,598)	(78,869)
Accounts payable	(211,738)	(312,114)
Accrued compensation and other accrued liabilities	(153,485)	58,448
Net cash (used in) operating activities	(444,853)	(45,390)
Cash flows from investing activities:
Acquisition of property and equipment	(135,009)	(176,635)
Patent costs	(29,171)	(11,947)
Net cash (used in) investing activities	(164,180)	(188,582)
Cash flows from financing activities:
Borrowings from credit facility	534,192
Proceeds from the issuance of common stock		255,000
Cost of the issuance of common stock		(27,984)
Net cash provided by financing activities	534,192	227,016
Net decrease in cash and cash equivalents	(74,841)	(6,956)
Cash and cash equivalents, beginning of period	126,224	564,671
Cash and cash equivalents, end of period	$ 51,383	$ 557,715