Fixed Assets

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Fixed Assets

Fixed Assets

Fixed assets consist of the following:

	Estimated Useful Life (Years)		December 31,
			2017			2016
Computer and laboratory equipment	3		$	881,969		$	1,724,819
Furniture and equipment	3		227,845			319,046
Production equipment	7		346,469			938,357
Leasehold improvements		*	117,994			117,994
			1,574,277			3,100,216
Less – accumulated depreciation			(1,133,435		)	(2,567,510		)
			$	440,842		$	532,706

* Lesser of life of lease or estimated useful life.

Depreciation expense was $262,334 and $251,327 for 2017 and 2016, respectively.