S.C. Code Ann. § 39-31-70: Exemptions.

This chapter does not apply to the delivery by a miller to a rice producer of rice or bulk rice milled by the miller from the producer's rice for use in the producer's own home when the miller is paid in rice or bulk rice for the milling service. However, if the producer desires the health benefits for his family and requests enrichment, the miller shall enrich according to the standards mentioned in this chapter.

This chapter does not apply to the sale of rice or bulk rice if the purchaser furnishes to the seller a certificate, in a form the commissioner by regulation prescribes, certifying that he will use the rice or bulk rice solely in the production of rice or bulk rice enriched as required by this chapter or other legitimate products not covered by this chapter.

This chapter does not apply to the sale of rice or bulk rice that has not been enriched according to the standards provided in this chapter if it meets the labeling and sanitation requirements prescribed in regulations promulgated by the commissioner.