ISO 21191:2021 outlines the safety requirements related to operators and the environment, along with the methods for verifying these requirements, for the design and construction of closed transfer systems (CTS) intended for liquid formulations of plant protection products (PPP) in containers ranging from 1 liter to 20 liters.
Additionally, it details the type of information regarding safe working practices, including details on residual risks, that must be provided by the CTS manufacturer. It also specifies the maximum potential for contamination during any individual transfer operation.
