In connection with the purchases of tangible personal property described in subdivisions (2), (4), and (22) of subsection (a) of Section 40-23-4, and therefore exempt from taxation as therein provided, the filing by the purchaser at retail of such property with the seller of a certificate in substantially the following form shall relieve the seller of any obligation to collect tax under Chapter 23 of this title with respect to the sales described therein:
The seller shall furnish a copy of said certificate, with receipt attached, to the purchaser and must retain the original thereof for examination by the Department of Revenue for a period of not less than one year from the date thereof.