2. PROPERTY AND EQUIPMENT (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Property and equipment, gross	$ 227,231	$ 237,848
Less accumulated depreciation and amortization	(222,302)	(230,795)
Property and equipment, net	4,929	7,053
Technical and laboratory equipment [Member]
Property and equipment, gross	210,669	220,511
Leasehold Improvements [Member]
Property and equipment, gross	4,255	4,454
Office Equipment [Member]
Property and equipment, gross	$ 12,307	$ 12,883

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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