Refurbished Hewlett Packard 35900E Multichannel Interface with choice of interface card: G1369A, HPIB or Jet Direct J4100AA 400N. Connect any remote device to your HP Chemstation. Converts analog signal to digital (A/D) and interfaces to your Chemstation. Series C, D, & E with LAN connection. Cables specific to your instrument sold separately. Please contact us for complete used and refurbished Hewlett Packard HPLC instrument, warranty and service contract details.