As of May 31, 2015, 1100 Series HPLC systems were categorized “End of Guaranteed Support” (EGS) by Agilent. Agilent would prefer it if you purchased a new system from them, but 1100 HPLCs are dependable workhorses. Why not keep them running with instrument replacement parts from Restek? Check out our selection, easily sorted by instrument and module: http://www.restek.com/Supplies-Accessories/HPLC-Accessories/Instrument-Accessories-Parts
We also offer PM kits for 1100 HPLCs. The autosampler PM kit (cat.# 25271) can be found here: http://www.restek.com/catalog/view/9668 and the pump PM kit (cat.# 25270) here: http://www.restek.com/catalog/view/9669.
We still keep our older Agilent instruments running with Restek replacement parts. Look at our HP 1050 in our R&D lab. Still going strong!
Let’s see pictures of your older instrumentation. Email a picture to me, and I’ll send you $10 Wizard Dollars (US only): firstname.lastname@example.org