CONDENSED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Sales, net	$ 7,474,993	$ 7,646,117	$ 15,147,794	$ 14,569,797
Cost of sales
Total cost of sales	5,406,974	5,437,049	10,220,179	10,035,806
Gross profit	2,068,019	2,209,068	4,927,615	4,533,991
Operating expenses
Sales and marketing	1,052,475	1,223,842	2,217,936	2,251,553
Research and development	141,465	157,395	285,692	305,844
General and administrative	1,812,764	2,133,040	3,519,645	4,433,907
Total operating expenses	3,006,704	3,514,277	6,023,273	6,991,304
Loss from operations	(938,685)	(1,305,209)	(1,095,658)	(2,457,313)
Interest and other income	34,692	14,173	62,843	24,678
Interest expense	(43,573)	(58,028)	(93,965)	(106,091)
Loss before income taxes	(947,566)	(1,349,064)	(1,126,780)	(2,538,726)
Provision for income taxes	140	282	210	565
Net (loss)	(947,706)	(1,349,346)	(1,126,990)	(2,539,291)
Preferred stock dividend requirements	(176,249)	(176,249)	(352,498)	(352,498)
Loss applicable to common shareholders	$ (1,123,955)	$ (1,525,595)	$ (1,479,488)	$ (2,891,789)
Basic loss per share (in dollars per share)	$ (0.03)	$ (0.05)	$ (0.05)	$ (0.09)
Diluted loss per share (in dollars per share)	$ (0.03)	$ (0.05)	$ (0.05)	$ (0.09)
Weighted average common shares outstanding:
Basic (in shares)	32,666,454	31,666,454	32,666,454	31,499,787
Diluted (in shares)	32,666,454	31,666,454	32,666,454	31,499,787
Cost of manufactured product
Cost of sales
Total cost of sales	$ 4,727,686	$ 4,801,495	$ 8,908,696	$ 8,812,408
Royalty expense to shareholder
Cost of sales
Total cost of sales	$ 679,288	$ 635,554	$ 1,311,483	$ 1,223,398