Condensed Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Operating activities:
Net (loss)	$ (130,519)	$ (152,009)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	47,323	79,918
Share-based compensation expense	16,530	15,365
(Recovery from) doubtful accounts, net	(31,000)	(1,000)
Provision for (recovery from) inventory obsolescence, net	23,000	(12,000)
Other income from release of account payable	(56,435)	0
Changes in operating assets and liabilities:
Right of use asset, net	72,542	20,128
Accounts receivable	(126,046)	42,085
Inventories	45,576	141,582
Prepaid expenses and other assets	810	50,080
Accounts payable	(91,159)	(265,744)
Accrued compensation and other accrued liabilities	66,514	(121,846)
Net cash (used in) operating activities	(162,864)	(203,441)
Investing activities:
Acquisition of property and equipment	(363)	(42,547)
Patent costs	(9,928)	(3,528)
Net cash (used in) investing activities	(10,291)	(46,075)
Financing activities:
Borrowings from credit facility, net change	46,008	93,045
Unsecured promissory note	598,567	0
EIDL loan	150,640	0
Net cash generated by financing activities	795,215	93,045
Net increase (decrease) in cash and cash equivalents	622,060	(156,471)
Cash and cash equivalents, beginning of period	385,132	298,348
Cash and cash equivalents, end of period	1,007,192	141,877
Supplemental disclosure:
Right of use asset	1,257,390	1,214,983
Accrued lease liability	1,383,473	1,279,675
Interest paid	$ 34,633	$ 2,783