SIL-HTC MODIFIED FOR DGS,Works With HPLC,SIL-HTc modified for DGS with ROM; two DGS valves; labor. For a complete system,user must supply four pumps and two gradient mixers.,SIL-HT DGS provides single point control over two independent binary high pressure gradient LC systems. Through the use of stream selection valves,it provides rapid serial injections from the SIL-HT autosampler into independent column streams.