Enterprise Electronics Cooperation (EEC) and Weather Decision Technologies, Inc (WDT), with consultation from the National Severe Storms Laboratory (NSSL) have partnered to bring the latest state-of-the-science combination of polarimetric hardware and applications to the commercial market. EEC has designed and manufactured a low-maintenance simultaneous transmission C-band polarimetric (SIDPOL) radar capable of deployment in both research and commercial applications. Algorithms designed by NSSL that will be part of the WSR-88D polarization system have been implemented on SIDPOL. These algorithms include data quality control, hydrometeor classification, and rainfall estimation using the available polarization parameters. The paper will present a briefing of the SIDPOL system and discuss the principles for rainfall estimation and hydrometeor classification at C-band.