The S 3580 Differential Refractive Index Detector series offers the sensitivity, stability and reproducebility required for optimal RI detection. The thermal isolated optic with a countercurrent heat exchanger and with its programmable temperature control, results in an extremly stable baseline and an optimal Signal / Noise ratio. The S 3580 series provide autopurge and autozero capabilities, as well as RS232 communication to acquire data directly without using any external signal interface.