STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating activities
Net loss	$ (216,382)	$ (1,230,094)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	47,947	34,373
Gain on sale of fixed assets	(1,244)	2,248
Provision for slow moving inventory	13,611	139,033
Compensation expense on stock-based arrangements with employees and consultants	52,590	41,752
Impairment of capitalized patent costs	105,665
Changes in operating assets and liabilities:
Accounts receivable	(23,098)	(10,725)
Inventories	(447,555)	142,312
Prepaid expenses and other current assets	3,065	(13,908)
Other assets	850
Sales incentives	(99,128)	99,128
Accounts payable	230,094	39,108
Deferred compensation	(61,750)	23,177
Accrued liabilities	208,113	30,559
Net cash used in operating activities	(187,222)	(703,037)
Investing activities
Capitalized patent costs	(81,268)	(76,731)
Proceeds from sale of equipment	5,000	3,000
Purchases of equipment	(26,009)	(27,845)
Net cash used in investing activities	(102,277)	(101,576)
Financing activities
Proceeds from issuance of notes payable to stockholders	601,273	875,000
Repayment of note payable to stockholder	(250,000)	(50,000)
Proceeds from stockholder loan		25,000
Payment of capital lease obligations	(3,443)	(3,755)
Net cash provided by financing activities	347,830	846,245
Net increase in cash	58,331	41,632
Cash at beginning of period	54,438	12,806
Cash at end of period	112,769	54,438
Supplemental cash flow information:
Cash paid for interest	109,167	238,595
Cash paid for taxes
Noncash investing and financing activities:
Forgiveness of stockholder loan and accrued interest	26,250	56,644
Addition to leasehold improvement as lease incentive	$ 35,690