Fixed Assets

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

5. Fixed Assets

Fixed assets consist of the following:


	Estimated Useful Life (Years)	December 31,
		2022		2021
Computer and laboratory equipment	3	$	459,218	$	913,966
Furniture and equipment	3	33,104		241,413
Production equipment	7	296,180		284,069
Leasehold improvements	*	58,128		65,395
		846,630		1,504,843
Less – accumulated depreciation		(681,011)		(1,306,140)
		$	165,619	$	198,703

*Lesser of life of lease or estimated useful life.

Depreciation expense was $49,391 and $76,378 for 2022 and 2021, respectively. During 2022, the Company wrote off fully depreciated fixed assets no longer in service with a cost basis and accumulated depreciation of $674,520. It also disposed of assets with a cost basis of $6,875 and recognized a loss in this amount. During 2021, the Company disposed of property and equipment with a cost basis of $131,731 resulting in a loss of $40,123.