We are offering portable refractometer. Kem, japan portable refractometer model ra-130 has a range of 1.32 - 1.50ri, 0 - 85% brix and also other scales like hfcs42 & hfcs55. The resolution of this system is +/-0.0001ri. This is a microprocessor controlled system with an led display. it can display ri, temp. Compensated ri, brix, hfcs42, hfcs55 and temperature (deg c or deg f). it can store up to 1,100 measurements and can communicate to an external computer through irda.