S.C. Code Ann. § 32-8-335 – "Alternative container"

(A) A crematory authority and funeral establishment may require a decedent's agent to purchase an alternative container to contain the human remains before cremation but may not require the agent to purchase a casket before cremation for viewing or the actual cremation.
(B) No crematory authority may accept human remains from a funeral establishment unless the remains are delivered in a casket, cremation casket, or an alternative container unless the funeral establishment has made arrangements with the crematory authority to provide the casket, cremation casket, or an alternative container before cremation. Only a licensed crematory may perform cremations of human remains in this State and only a licensed funeral director or a funeral establishment may sell preneed and at-need merchandise.
(C) For purposes of this section, "alternative container" means a receptacle other than a casket, in which human remains are transported to a crematory and placed in a cremation chamber for cremation. An alternative container or cremation casket must be:
1. (a) composed of readily combustible materials suitable for cremation;
2. (b) resistant to leakage or spillage;
3. (c) rigid enough for handling with ease;
4. (d) able to provide protection for the health, safety, and personal integrity of crematory personnel.