(a) A cremation container shall meet substantially all of the following standards:
(i) Be composed of readily combustible materials suitable for cremation;
(ii) Be able to be closed in order to provide a complete covering for the human remains;
(iii) Be resistant to leakage and spillage;
(iv) Be rigid enough for handling with ease; and (v) Provide protection for the health, safety, and integrity of crematory personnel and the cremation facility.