2. PROPERTY AND EQUIPMENT (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Property and equipment, gross	$ 221,840	$ 227,231
Less accumulated depreciation and amortization	(218,357)	(222,302)
Property and equipment, net	3,483	4,929
Technical and laboratory equipment [Member]
Property and equipment, gross	206,448	210,669
Leasehold Improvements [Member]
Property and equipment, gross	4,170	4,255
Office Equipment [Member]
Property and equipment, gross	$ 11,222	$ 12,307

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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