STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (88,409)	$ (653,714)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and accretion	433,841	391,901
Amortization	2,107	2,316
Stock based compensation	102,294	88,349
Patent impairment	0	38,726
Loss (gain) on disposal of equipment	850	(425)
Deferred income taxes	0	156,000
Inventory reserve	23,095	22,369
Credit for doubtful accounts	0	(530)
Changes in operating assets and liabilities:
Accounts receivable	(141,982)	277,419
Inventories	(421,937)	(215,383)
Prepaid expenses	(17,969)	(20,904)
Other assets	13,969	(26,875)
Accounts payable	42,977	85,777
Accrued expenses and customer deposits	311,786	311,650
Net cash provided by operating activities	260,622	456,676
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds on sale of equipment	0	425
Purchases of property and equipment	(563,997)	(1,069,537)
Net cash used in investing activities	(563,997)	(1,069,112)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of common stock options	0	12,150
Proceeds from notes payable	911,546	642,126
Principal payments on capital lease obligations and notes payable	(814,862)	(350,588)
Payment of cumulative dividends on preferred stock	0	(24,152)
Net cash provided by financing activities	96,684	279,536
NET DECREASE IN CASH	(206,691)	(332,900)
CASH - Beginning of period	798,069	1,511,752
CASH - End of period	591,378	1,178,852
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest	65,214	57,708
Income taxes	605	713
SUPPLEMENTAL DISCLOSURES OF NONCASH FINANCING ACTIVITIES
Property and equipment purchased by capital lease	0	185,000
Increase in asset retirement obligation	$ 6,480	$ 4,968