GMI Certified Pre-Owned

LC-MS/MS  &  GC-MS/MS

Factory-trained engineers, application support and a price match guarantee.  Up to 5-Year Warranty Coverage. 

Peace of mind, without the sticker shock.

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GMICore is GMI’s e-commerce platform for essential laboratory supplies, consumables and benchtop equipment. Designed for convenience and reliability!

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Unrivaled German Engineering

KNAUER FPLC, HPLC, SMB, PREP LC & Dosing pumps, sold and serviced exclusively by GMI.

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Powering the Future of Bioprocessing

Tailored purification technologies from VERDOT, now available through GMI. Scale smarter, faster, and more sustainably.

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2-Year Worry-Free Warranty Now Included

All GMI Certified Pre-Owned Floor Model Centrifuges now with a 2-year warranty included!

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Best Price On Service Contracts, Guaranteed

We'll beat any qualified competitor's annual service contract price. Most customers are saving 10-20% annually.

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GMI Certified Pre-Owned

AKTA FPLC

Factory-trained engineers, application support and a price match guarantee.  Up to 5-Year Warranty Coverage. 

100% of the OEM Quality & Support - 50% of the Cost

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We want to buy your unwanted instruments

Convert your excess inventory into cash instantly! Review our buying list and submit our easy-to-fill-out form today.

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Trusted Laboratory Solutions

Your premier destination for new and certified pre-owned lab Equipment and world-class service.

Trusted by leading universities, companies, and government agencies worldwide, GMI guarantees excellence in every aspect of your laboratory needs.

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Trusted By Over 30,000 Companies & Institutions

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Our Comprehensive Solutions

Certified Pre-Owned

Discover reliable, budget-friendly instruments through our rigorous re-certification process. All GMI re-certified equipment is warrantied.

 

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New Equipment

As exclusive distributors of top manufacturers, we offer premier lab equipment for Autoclaves, Biological Safety Cabinets, Freezers, Ovens, Centrifuges, FPLC, HPLC, and more.

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Factory Clearance

Explore factory clearance and "Scratch & Dent" deals on top brands like VWR and NuAire, offering warrantied units at approximately 50% savings.

 

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Parts & Accessories

With 12,000+ parts in stock, find the expertise and components to keep your lab running smoothly.

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Service & Repair

GMI offers  instrumentation support, including On-Site Support Plans and Depot Repair options.

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Sell Your Instruments

Convert surplus lab equipment into value with our expert appraisal and top-dollar offers.

Sell Your Surplus Instruments
Our Point & Click Platform

Grab Your Lab Supplies Fast!

GMICore is GMI’s e-commerce platform for essential laboratory supplies, consumables and benchtop equipment. Designed for convenience and reliability!

Hassle Free Ordering

Fast Fulfillment

Earn Rewards

GMI was a very professional business to work with. Shipping was quick and easy. Technical Support was quick to respond. I would highly recommend GMI for all your laboratory equipment needs.

Top notch customer service and vast selection of inventory. Highly recommend.
Great costumer service, over delivered and got everything I needed ahead of time.
Very professional transaction. Would definitely buy from GMI again.
GMI were very easy and nice to work with, they quickly got in touch with me regarding a specific piece of equipment and were able to secure several options for me to choose from, letting me get to my experiments with minimal turnaround time.
As a small business owner that depends on specific laboratory equipment to operate, GMI delivered on every front.
We bought a Leitz 1512 microtome for our lab from this company and the product is great. Costumer service is fantastic. We are happy with our purchase and highly recommend GMI to everybody.
A+ supplier. Very helpful and materials received new and ready for use right out of the box.
Great experience purchasing equipment from GMI in the past and will certainly be going with them for potential future purchases! Quick responses, understood my needs and great prices!
I have bought several pieces of equipment from GMI. In each case, my experience was fantastic. The salesperson made sure that he understood my needs and offered alternatives. The equipment arrived quickly and in great condition. I will use GMI in the future.
They are experts in the field - I wouldn't trust our business with any one else.
I have worked with GMI for the past 3 years for service contracts on laboratory instruments and we are very satisfied with the level of service we have received. I would recommend them to anyone who needs to use their services.

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Latest News

Check out our blog to keep up with the latest news, insights & trends in lab instrumentation! 

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Choosing FlexiPro™ TFF for Scalable, High-Performance Bioprocessing

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Cannabis Testing Turn-Key Solutions

Navigate the complexities of the cannabis industry with expert guidance and tailored instrumentation solutions for your needs.

Lab Instrument Suppliers You Can Trust: Precision, Reliability, and Innovation

Selecting a laboratory instrumentation partner is a strategic decision that affects data integrity, regulatory readiness, and research velocity. At GMI, we support universities, biotechnology firms, clinical laboratories, and research institutes with rigorously vetted instruments and method-ready services that keep programs on schedule and within budget.

Why Certified Pre-Owned Often Delivers the Best Scientific and Financial Outcome

Modern labs face tight capital cycles, long OEM lead times, and uncompromising requirements for accuracy and reproducibility. Certified Pre-Owned (CPO) instrumentation offers a pragmatic path to top-tier capability without sacrificing performance.

What “Certified” means at a research standard

  • Multi-point refurbishment and verification to original manufacturer specifications.
  • Documented calibration with traceability (e.g., NIST-traceable standards where applicable).
  • IQ/OQ/PQ documentation support to streamline validation in regulated and accredited environments.
  • Decontamination and firmware review, with components replaced at defined wear thresholds.
  • Burn-in and stability testing to confirm baseline performance and reduce early-life failures.

Key advantages

  • Capital efficiency: Comparable analytical performance at a fraction of new-purchase cost.
  • Time to lab: Faster deployment than typical OEM lead times.
  • Risk reduction: Warranty coverage and service options aligned to criticality and uptime needs.
  • Sustainability: Extends instrument life cycles while reducing waste and carbon impact.

Driving Innovation With Advanced Biotech Instrumentation

Precision is non-negotiable in genomics, proteomics, metabolomics, and molecular diagnostics. Our portfolio is curated to support quantitative, reproducible science across discovery and regulated workflows.

Selected categories

  • Mass spectrometers and chromatography systems: Quantitative and qualitative analysis of complex matrices; LC-MS/MS and GC-MS for small molecules and biomolecules; HPLC/UPLC for robust separations.
  • Thermal cyclers and qPCR systems; microplate readers: High-throughput workflows for gene expression, genotyping, and kinetic assays.
  • Liquid chromatography instruments: Method-transfer-ready platforms for pharmaceutical development and life science research.

Each instrument is sourced from top-tier manufacturers and qualified against manufacturer specifications. Where needed, our team assists with method verification to help you achieve target limits of detection, linearity, and precision.

Services Built for PhD-Level Research and Regulated Labs

Beyond the instrument, scientific outcomes depend on implementation, training, and lifecycle support. We align services to your experimental and compliance context.

  • Specialized technical support: Installation, calibration, operator training, and method handover assistance.
  • Validation support: IQ/OQ/PQ packages and templates to accelerate CLIA/CAP, GLP, or ISO/IEC 17025 readiness.
  • Preventive maintenance and repair: Scheduled PM, rapid-response troubleshooting, and access to critical spares.
  • Data and compliance considerations: Guidance on audit trails, firmware versions, and CFR Part 11–supportive configurations where applicable.

Why GMI Is a Strategic Partner for Advanced Research

We combine research-grade instruments with the services and documentation scientists need to publish, pass audits, and scale programs.

  • Certified Pre-Owned Lab Equipment: Performance-verified platforms with warranty options.
  • Biotech Instrumentation Portfolio: Capabilities spanning molecular biology, proteomics, and analytical chemistry.
  • Continuity of Research: From commissioning to lifecycle support, our goal is stable uptime and reproducible data.

Whether you need a single instrument or an integrated platform, we will scope a solution that meets your scientific requirements, compliance obligations, and budget.