30+ YEARS OF EXCELLENCE

Your Trusted Lab Equipment Partner, Start to Finish

GMI is the single source for the full life of your lab instruments

New and pre-owned instruments, surplus buyback, service and full lab buildouts, all from one team.

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FROM OUR FLOOR TO YOUR BENCH

In Stock & Ready to Ship Laboratory Equipment

100+ lab instruments on the shelf at GMI and ready to go. Skip the lead times on centrifuges, incubators, HPLC, PCR and more.

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GMI CERTIFIED PRE-OWNED

AKTA FPLC Systems at Half the OEM Cost

Factory-trained engineers, application support and our Price Beat Guarantee. Get OEM-level quality with up to 5-year warranty coverage.

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GMI Price Beat Guarantee

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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Peptide QC Suite

Analytical Instruments for Peptide Testing Labs

LC-MS, UHPLC, ICP-MS and GC-MS systems configured for peptide QC. Cover purity, identity, impurities, elemental analysis and residual solvents.

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Trusted by 30,000+ companies & institutions

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Your complete lab equipment partner

Everything your lab needs, from one team

Buy it, service it, stock it, and sell it when you’re done. GMI covers the full life of your laboratory equipment, so you work with one partner instead of five vendors.


Best value

Certified Pre-Owned Equipment

OEM-level performance at a fraction of the cost.

  • As-is to fully refurbished
  • Warranty up to 5 years
  • Service plans
  • IQ/OQ/PQ support
  • New arrivals weekly
Shop Certified Pre-Owned


New

New Laboratory Equipment

The latest technology with full manufacturer warranties.

  • 35+ categories
  • Manufacturer warranty
  • GMI support
  • KNAUER exclusive
  • Free consultation
Shop new equipment


Service

Service & Repair

On-site and in-shop service from experienced technicians.

  • Repairs & troubleshooting
  • Preventive maintenance
  • Install & de-install
  • In-house refurbishment
  • Price Beat Guarantee
Explore service plans


Lab Supplies & Consumables

Point-and-click ordering for consumables and benchtop equipment.

  • Pay by card
  • Instant invoice
  • No PO needed
  • Fast fulfillment
  • Core Rewards
Shop lab supplies


Sell Your Surplus Equipment

Turn retired instruments into cash, GMI credit or a trade-in.

  • Free appraisal
  • Direct purchase
  • Lab to Lab marketplace
  • Consignment
  • Auction
  • Full lab decommissions
Get a free appraisal

Start to finish

One partner for the full life of your instruments

From the day an instrument arrives to the day you replace it, GMI handles every stage, so nothing falls between vendors.

01

Source

New or Certified Pre-Owned instruments matched to your methods, timeline and budget.

02

Install & validate

Installation, calibration, operator training and IQ/OQ/PQ support for regulated labs.

03

Maintain

Preventive maintenance, repairs, parts and the consumables that keep your bench running.

04

Upgrade or sell

Turn retired instruments into cash or credit toward your next system.

Talk to an expert

Manufacturers we carry

Top brands, every major instrument category

New and Certified Pre-Owned instruments from the manufacturers labs trust most, plus service and support for the systems you already run.

AgilentCytiva (AKTA)KNAUERBeckman CoulterShimadzuHettichEscoThermo ScientificEppendorfMemmert+ many more
Certified Pre-Owned

HPLCFPLCLC/MSICP-MSCentrifugesCold Storage+ many more

New Equipment

ChromatographyCentrifugesBiological Safety CabinetsFreezersHistology+ many more

10–20%Typical annual savings

The GMI Price Beat Guarantee

We’ll beat any qualified competitor’s annual service contract on instruments we service, including Certified Pre-Owned instruments, whether or not you bought them from GMI.

Get a service quote How it works

GMI field service engineer working on a laboratory instrument


Minnesota|California|Delaware·Serving labs nationwide

Why labs choose GMI

Research-grade instruments, backed by people who know them

Universities, biotech and pharma companies, clinical labs and government agencies rely on GMI to keep programs on schedule and within budget.

Up to 5-year warranty

Coverage options aligned to your uptime needs.

About half the OEM cost

Top-tier capability without new-purchase pricing.

Factory-trained engineers

Installation, calibration, PM and repair.

In stock, ready to ship

100+ instruments on the shelf. Skip OEM lead times.

BBB A+ rated

For more than 21 years.

30+ years of expertise

Application support from sourcing to retirement.

5-star Google reviews

What labs say about working with GMI

5.0rated on Google

Real feedback from researchers, lab managers and small business owners across the country.

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.

CChad LakeGoogle reviewSupport

Top notch customer service and vast selection of inventory. Highly recommend.

RRoss JordanGoogle reviewInventory

Great customer service, over delivered and got everything I needed ahead of time.

AAlessandro MammoliGoogle reviewService

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.

MMark RobertsGoogle reviewEquipment

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.

AAmrith RodriguesGoogle reviewService contracts

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.

DDaniel FinesGoogle reviewSourcing

Let’s build your lab

Not sure where to start? Talk to a lab equipment expert.

Tell us what you’re running, what you need, or what you’re retiring. We’ll come back with options for equipment, service and pricing.

Request a quote
(763) 712-8717

From the GMI blog

Latest news & insights

October 1, 2026

GMI Is Now in San Diego: Southern California Lab Equipment Service

GMI now has a physical location in San Diego, offering local lab equipment service on the West Coast.

Read article

June 29, 2026

How to Start a Peptide QC Lab: The Analytical Instrumentation You Need

The peptide testing market is growing fast. Here’s the instrumentation a peptide QC lab needs to get started.

Read article

June 17, 2026

Building a Gas Chromatograph From Scratch? Now That’s Innovation.

A look at building a gas chromatograph to study silage emissions.

Read article

FAQ

Frequently asked questions

Answers about Certified Pre-Owned and new lab equipment, service, warranties and selling surplus instruments.

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What is Certified Pre-Owned lab equipment?

Certified Pre-Owned (CPO) lab equipment is used instrumentation that GMI sources, inspects and prepares for resale. You choose the condition that fits your budget, from as-is to fully refurbished to factory standards. Every CPO instrument includes a standard warranty, with extended coverage available up to 5 years.

How much can I save with Certified Pre-Owned instead of new?

Certified Pre-Owned instruments deliver OEM-level performance at a fraction of the new-purchase price. For example, GMI Certified Pre-Owned AKTA FPLC systems typically cost about half of the OEM price, and in-stock units ship without long OEM lead times.

What warranty comes with GMI equipment?

Every Certified Pre-Owned instrument includes a standard warranty, with extended warranties available up to 5 years. New instruments carry full manufacturer warranties backed by GMI support.

Does GMI service lab equipment I didn't buy from GMI?

Yes. GMI provides on-site and in-shop instrument service, including repairs and troubleshooting, preventive maintenance, service contracts, installation and de-installation, and in-house testing and refurbishment. The Price Beat Guarantee on service contracts also covers Certified Pre-Owned instruments whether or not they were purchased from GMI.

What is the GMI Price Beat Guarantee?

GMI will beat any qualified competitor's annual service contract price on instruments GMI services. Most customers save 10–20% per year.

How do I sell surplus lab equipment?

Request a free appraisal through Science Liquidation, powered by GMI. You can sell by direct purchase, through the Lab to Lab marketplace, on consignment or at auction, and take payment as cash, GMI credit or a trade-in toward new equipment.

Where can I find parts, supplies and consumables for my instrument?

GMI keeps 12,000+ replacement parts and accessories in stock for the instruments it sells and services. For everyday consumables and benchtop equipment, GMICore, GMI's online supply store, offers point-and-click ordering: pay by card at checkout, get your invoice instantly with no PO required, and earn Core Rewards on every order.

Does GMI support validation for regulated labs?

Yes. GMI offers installation, calibration, operator training and IQ/OQ/PQ documentation support to help labs prepare for CLIA/CAP, GLP and ISO/IEC 17025 requirements.

Where is GMI located?

GMI has locations in Minnesota, California and Delaware and serves labs nationwide, with more than 30 years of experience in laboratory equipment.