Generally, when writing conditions involving a BOOL, try to form condition to use TRUE or FALSE depending on whichever will favor the safer path (e.g. if a bug or stack/array overflow corrupted the...
Generally, when writing conditions involving a BOOL, try to form condition to use TRUE or FALSE depending on whichever will favor the safer path (e.g. if a bug or stack/array overflow corrupted the BOOL to a value like 0x12345678, this condition would still pass).
So in this condition, we are deciding whether dialysate can be delivered to the reservoir. We would like to err on the side of not delivering to the reservoir (safer state). So we should form the condition in a way that conductivity and temperature ranges being good must be TRUE (1) in order to deliver dialysate to the reservoir. Any other value would result in coming out of dialysate delivery state which is the safer thing to do.