What determines a positive response?
For a continuously monitoring method, a positive response would be characterized by a sudden and increase in the measurement values and / or a sudden increase in the variability of the measurement values. For example, if your membrane effluent was characterized by constant low turbidity of 0.022 NTU and it varies by less than 0.002 NTU suddenly increases to 0.033 NTU and varies by 0.010 NTU, then this could be an indicator of an integrity breach. This FAQ supplied by: Hach Company.
