The equipment was taken after the execution of a warrant in a joint operation between council environmental protection officers and Gloucestershire Police.
But the Scottish Salmon Producers Organisation says the Scottish Environment Protection Agency assesses farms before and during operation, and sets limits on the use of chemicals and allowed pollution.
The search for two people who remain missing will continue alongside the removal operation, said Franco Gabrielli, head of the Italian Civil Protection agency.
He told the BBC he had been phoned by a member of the child protection team at the PCT saying Hannah could be taken from their care if she refused to have the operation.