Condensed Statements of Operations (Unaudited) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net sales		$ 4,251,348	$ 2,572,439	$ 7,324,756	$ 6,069,631
Cost of goods sold		2,822,044	2,187,544	4,899,120	4,531,504
GROSS PROFIT		1,429,304	384,895	2,425,636	1,538,127
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	[1]	1,944,502	1,202,307	3,128,093	2,983,327
RESEARCH AND DEVELOPMENT EXPENSES	[1]	128,895	201,234	263,817	384,814
LOSS FROM OPERATIONS		(644,093)	(1,018,646)	(966,274)	(1,830,014)
INTEREST EXPENSE		(82,498)	(24,623)	(102,340)	(46,107)
OTHER INCOME		5,138	1,766	5,175	8,683
LOSS BEFORE INCOME TAXES		(721,453)	(1,041,503)	(1,063,439)	(1,867,438)
INCOME TAX EXPENSE (BENEFIT)		823	0	(19,524)	(238,929)
NET LOSS		$ (722,276)	$ (1,041,503)	$ (1,043,915)	$ (1,628,509)
LOSS PER COMMON SHARE
Basic (in dollars per share)		$ (0.37)	$ (0.53)	$ (0.53)	$ (0.82)
Diluted (in dollars per share)		$ (0.37)	$ (0.53)	$ (0.53)	$ (0.82)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)		1,977,959	1,976,354	1,977,368	1,976,354
Diluted (in shares)		1,977,959	1,976,354	1,977,368	1,976,354

[1] The Company does not allocate all selling, general and administrative expenses or any research and development expenses to its operating segments for internal reporting.