NOTE 4 – PROPERTY AND EQUIPMENT

Property and equipment was comprised of the following:

Depreciation expense for the three months ended September 30, 2018 and 2017 was $88,800 and $165,900, respectively and for the nine months ended September 30, 2018 and 2017 was $318,100 and $485,800, respectively. For the three months ended September 30, 2018 depreciation expense included in cost of goods sold and selling, general and administrative expenses was $70,700 and $18,100 respectively. For the nine months ended September 30, 2018 depreciation expense included in cost of goods sold and selling, general and administrative expenses was $263,200 and $54,900, respectively. For the three months ended September 30, 2017 depreciation expense included in cost of goods sold and selling, general and administrative expenses was $136,600 and $29,300 respectively. For the nine months ended September 30, 2017 depreciation expense included in cost of goods sold and selling, general and administrative expenses was $407,500 and $78,300, respectively.

Accumulated depreciation on leased CoronaLux™ units included in accumulated depreciation and amortization above is $259,100 and $422,500 as of September 30, 2018 and 2017, respectively.

Property and equipment included the following amounts for leases that have been capitalized at: