4. RESEARCH AND OFFICE EQUIPMENT

12 Months Ended

Sep. 30, 2015

Notes to Financial Statements

4. RESEARCH AND OFFICE EQUIPMENT

Research and office equipment consisted of the following at September 30:

		2015			2014
Research equipment	$	3,268,757		$	3,230,882
Furniture and equipment		141,347			141,269
Leasehold improvements		131,910			131,910
		3,542,014			3,504,061
Accumulated depreciation and amortization		(3,234,548	)		(3,101,057	)
Net research and office equipment	$	307,466		$	403,004

Depreciation expense for the years ended September 30, 2015, 2014 and 2013 totaled $166,279, $188,967 and $275,917, respectively.  During the years ended September 30, 2015, 2014 and 2013, equipment with a net book value of $313, $268 and $4,350, respectively, was retired.  One asset is recorded under capital lease with a cost of $33,203 at September 30, 2015 and 2014.  Accumulated amortization on this asset is $24,902 and$16,660 at September 30, 2015 and 2014, respectively.  Amortization of the capital lease asset is included in depreciation and amortization expense in the Statements of Operations.