New and Certified Pre-Owned

HPLC Systems

The industry’s largest selection of HPLC systems with solutions for every budget and application. Shop Agilent, KNAUER, Shimadzu and more, all backed by warranties up to 5 years and supported by OEM-trained engineers.

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“We used GMI for an HPLC PM + repair and were very satisfied with the service we received. The engineer was able to fix our machine and answered any questions we had during the process. He was very patient and knowledgeable. The office staff were also very helpful with scheduling and billing. Overall the whole process went smoothly and we are glad our unit is finally working. Thanks GMI!”

Touro Pharm

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What does GMI Certified Pre-Owned mean?

GMI’s Certified Pre-Owned systems are recertified to factory standards by our expert engineers, who bring unmatched industry experience to every system. Each system comes with a 1-year warranty, with options to extend coverage up to 5 years, giving your lab peace of mind, reliability, and performance like new.

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New KNAUER HPLC Systems, Exclusively at GMI

GMI is the exclusive U.S. distributor and service provider for KNAUER HPLC systems. Our factory-trained engineers ensure your system performs flawlessly, and every new KNAUER system comes with a 2-year warranty. Offering a competitive and affordable alternative, GMI delivers faster response times and more cost-effective service than the large OEMs.

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Service Department
From cutting-edge systems to legacy models, GMI keeps your HPLC running at peak performance. Choose On-Site Service Plans or Depot Repairs, all handled by OEM-trained engineers with 22+ years of experience. Fast, reliable, and professional—every time.

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Custom Chromatography

Flow rates from <1 mL/min to >5 L/min, GMI designs LC, LC/MS, GC, GC/MS, and scale-up systems tailored to your workflow.

GMP & CFR 21 Part 11 compliant with up to 5 years of protection.

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Looking to Sell Your HPLC System?
GMI is actively buying HPLC systems, including Agilent 1100, 1200, 1260, 1290, and more. Get a fair, fast offer from experts who understand your equipment and its value. Turn your unused systems into cash.

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Find the Right System for Your Lab

We’re here to help you choose the best solution and support all your laboratory needs.

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