CONDENSED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONDENSED STATEMENTS OF OPERATIONS
NET SALES	$ 4,071,478	$ 3,628,992
COST OF GOODS SOLD	2,709,059	2,538,764
GROSS PROFIT	1,362,419	1,090,228
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	1,348,983	1,510,614
RESEARCH AND DEVELOPMENT EXPENSES	154,076	165,770
LOSS FROM OPERATIONS	(140,640)	(586,156)
INTEREST EXPENSE	(19,935)	(20,817)
OTHER	9,421	5,153
LOSS BEFORE INCOME TAXES	(151,154)	(601,820)
INCOME TAX BENEFIT	(20,416)	(222,923)
NET LOSS	$ (130,738)	$ (378,897)
LOSS PER COMMON SHARE:
Basic (in dollars per share)	$ (0.07)	$ (0.19)
Diluted (in dollars per share)	$ (0.07)	$ (0.19)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	1,983,553	2,018,753
Diluted (in shares)	1,983,553	2,018,753