Statements of Cash Flows (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net loss	$ (615,673)	$ (530,653)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	318,327	262,746
Impairment of patent costs	42,212
Stock-based compensation expense related to stock options	60,353	67,808
Provision for doubtful accounts, net change	(6,500)	6,500
Provision for inventory obsolescence, net change	(66,000)	57,000
Change in operating assets and liabilities:
Accounts receivable	448,696	(274,458)
Inventories	(374,294)	57,865
Prepaid expenses and other assets	(39,123)	62,276
Accounts payable	(216,576)	366,385
Accrued compensation and other accrued liabilities	132,785	84,166
Net cash provided by (used in) operating activities	(315,793)	159,635
Cash flows from investing activities:
Acquisition of property and equipment	(301,408)	(701,719)
Patent costs	(34,240)	(23,730)
Net cash used in investing activities	(335,648)	(725,449)
Cash flows from financing activities:
Paydown of credit facility		(435,000)
Proceeds from the issuance of common stock	255,000	1,500,000
Cost of the issuance of common stock	(42,006)	(54,523)
Net cash provided by financing activities	212,994	1,010,477
Net increase (decrease) in cash and cash equivalents	(438,447)	444,663
Cash and cash equivalents, beginning of fiscal year	564,671	120,008
Cash and cash equivalents, end of fiscal year	126,224	564,671
Supplemental disclosures of cash flow information:
Cash paid during the year for interest		$ 52,589