There is no standard for conductivity as such but, along with the reject ratio, it is a useful indicator of membrane efficiency. Where the AAMI standard refers to the acceptable levels of chemicals in the water, there is not much difference between this standard and any other. Where there are differences is in the microbiological levels. The UK and EU standards are much higher (i.e. require lower levels) than AAMI.
It shouldn't matter which UK renal department, they should all be aiming to comply with the standard, as a minimum.
