Conveyances used for transporting bulk medicinal plant materials from the place of production to storage for processing should be cleaned between loads. Bulk transport, such as ship or rail cars, should be cleaned and, where appropriate, well ventilated to remove moisture from medicinal plant materials and to prevent condensation.
Organically grown medicinal plant materials should be stored and transported separately or in a manner that ensures their integrity.
Appropriate security measures should be applied to the storage and transport of medicinal plant materials that are potentially toxic or poisonous.
Whenever required and when possible, fresh medicinal plant materials should be stored at appropriate low temperatures, ideally at 2-8 °C; frozen products should be stored at less than -20 °C.
Fumigation against pest infestation should be carried out only when necessary, and should be carried out by licensed or trained personnel. Only registered chemical agents authorized by the regulatory authorities of the source country and the countries of intended end-use should be used. All fumigation, fumigation agents, and dates of application should be documented. When freezing or saturated steam is used for pest control, the humidity of the materials should be checked after treatment.