Condensed Balance Sheets - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 30,000	$ 98,000
Accounts receivable, net of allowance for doubtful accounts of $5,000 at June 30, 2021 and $22,000 at December 31, 2020	387,000	407,000
Inventory, net of allowance of $321,000 at June 30, 2021 and $279,000 at December 31, 2020	475,000	536,000
Prepaid expenses and other current assets	25,000	104,000
Right of use asset - operating leases	36,000	35,000
Total current assets	953,000	1,180,000
Property, plant and equipment, net	544,000	576,000
Patents, net	104,000	108,000
Right of use asset - operating leases others	22,000	41,000
Other assets	21,000	21,000
Total assets	1,644,000	1,926,000
Current liabilities
Accounts payable	593,000	577,000
Accrued expenses and other current liabilities	487,000	620,000
Right of use liability - operating leases	26,000	33,000
Wages payable	92,000	107,000
Line of credit	287,000	277,000
PPP Loan	332,000	332,000
Current portion of long-term debt, net of deferred finance costs	1,290,000	75,000
Total current liabilities	3,107,000	2,021,000
Long-term debt/other liabilities , net of current portion and deferred finance costs	0	1,120,000
Right of use liability - operating leases	30,000	41,000
Total liabilities	3,137,000	3,182,000
Stockholders' deficit:
Preferred stock; par value $.01 per share; 5,000,000 shares authorized, none issued and outstanding at June 30, 2021 and December 31, 2020	0	0
Common stock; par value $.01 per share; 75,000,000 shares authorized; 42,603,476 issued and outstanding at June 30, 2021 and 37,703,476 issued and outstanding as of December 31, 2020	426,000	377,000
Additional paid-in capital	22,232,000	21,717,000
Accumulated deficit	(24,151,000)	(23,350,000)
Total stockholders' deficit	(1,493,000)	(1,256,000)
Total liabilities and stockholders' deficit	$ 1,644,000	$ 1,926,000