Condensed Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 923,000	$ 1,041,000
Cost of goods sold	617,000	669,000
Gross profit	306,000	372,000
Operating expenses:
Research and development	19,000	25,000
Selling and marketing	113,000	161,000
General and administrative	348,000	392,000
Operating Expenses, Total	480,000	578,000
Operating loss	(174,000)	(206,000)
Other income / (expense):
Interest expense	(67,000)	(71,000)
Other income, net	1,000	10,000
Other income / (expense), Total	(66,000)	(61,000)
Net loss before tax	(240,000)	(267,000)
Income tax expense	0	0
Net loss	$ (240,000)	$ (267,000)
Basic and diluted loss per common share	$ (0.01)	$ (0.01)
Weighted average number of shares outstanding - basic	32,367,963	29,822,770
Weighted average number of shares outstanding - diluted	32,367,963	29,822,770