Blue-green AlgaeThe EXO BGA readings show excellent linearity on serial dilution of a surrogate solution of Rhodamine WT (R2>0.9999) and this should ensure relative accuracy of field BGA-PC readings, i.e., a BGA-PC reading of 100 units will represent twice the algal content of water with a BGA-PC reading of 50 units. A significant advantage of the EXO BGA-PC sensor is that its readings show less interference from turbidity and this will allow for much more accurate determination of BGA-PC content during rainfall events which release both sediment and algae into the water.