1. The provisions of this title shall not apply to photographic film and paper, pharmaceutical products, biological products or any substance that may be lawfully sold over the counter without a prescription under the federal Food, Drug and Cosmetic Act, 21 USC 301 et seq. For the purposes of this subdivision, "biological product" means a virus, therapeutic serum, toxin, antitoxin, vaccine, blood, blood component or derivative, allergenic product or an analogous product, or arsphenamine, or any other trivalent organic arsenic compound used for the prevention, treatment or cure of a disease or condition of human beings.

2. The provisions of subdivision one of section 27-2105 of this title shall not apply to mercury-containing lamps discarded by households.

3. The provisions of subdivision one of section 27-2105 of this title shall not apply to mercury-containing lamps discarded by a small business if such small business discards no more than fifteen mercury-containing lamps per month. For the purposes of this subdivision "small business" means any business which is resident in this state, independently owned and operated, not dominant in its field, and employing not more than one hundred individuals.