You are searching for a replacement for your old HPLC. On the internet you find a lot of providers, mostly dealers. These new HPLC systems are expensive for laboratories who needs a HPLC just for e few tests.
Labrecycling can offer you used or refurbished HPLC systems.

Used & Reconditioned HPLC systems for sale 

You can buy a HPLC system at the factory or one of the dealers. For some laboratory it is not possible to buy a new HPLC instrument and can buy a refurbished HPLC one or in good & working condition. 

The last two options will cost you much less and are great instruments, that will last for years to come.

This reconditioned HPLC is sold by Labrecycling 

HPLC stands for: High-performance liquid chromatography

High-performance liquid chromatography (HPLC) systems are used to analyze and/or purify liquid mixtures. ... The sample liquid is mixed with the mobile phase and run through a column that contains the stationary phase. The way the sample moves through the column is the basis for the analysis.

Only compounds dissolved in solvents can be analyzed with HPLC. HPLC separates compounds dissolved in a liquid sample and allows qualitative and quantitative analysis of what components and how much of each component are contained in the sample.