We Buy Used Lab Instruments

One instrument or an entire laboratory — send us your list and get a formal offer within 1 business day. Offers are priced from real resale-market data, not guesswork.

Get an Offer

What We're Looking For

How It Works

Tell us what you have — in detail

Fill in the form below for each instrument: year, condition, configuration, what's included, and where it's coming from. Add photos and, if you can, a short power-on video. Detail is what makes a firm price possible.

Get a formal offer in 1 business day

Complete submissions get a formal written offer within 1 business day, priced from real market data. If something's missing, we'll tell you exactly what we still need — an incomplete submission gets questions, not a lowball.

We handle the rest

Once you accept, we coordinate pickup or freight and pay exactly as stated in your written offer — no deductions after the fact.

What We're Looking For

  • Microplate readers — Molecular Devices SpectraMax (M3, M5, M5e, i3x, iD5, iD3), BioTek Synergy series
  • Flow cytometers — Beckman Coulter CytoFLEX and CytoFLEX S (all configurations)
  • Particle analyzers — Malvern Zetasizer (Nano ZS, Zetasizer Ultra, Zetasizer Pro, Zetasizer Lab), Beckman Coulter Multisizer 4e
  • Light scattering — Wyatt DAWN HELEOS II, Optilab
  • HPLC / UPLC — Agilent 1100 / 1200 / 1260 / 1290 systems and individual modules; Waters systems
  • FPLC — Cytiva ÄKTA pure / avant / go / purifier, modules and fraction collectors
  • Capillary electrophoresis — SCIEX PA 800 Plus
  • Centrifuges — Eppendorf, Beckman Coulter, Thermo Scientific benchtop and floor models
  • Plus most major brands of analytical and benchtop instruments.

Don't see your instrument on the list? Send it anyway — if it has resale value, we'll price it.

Not working? We buy it too. Non-working and parts instruments are welcome — often the units we want most. Tell us what's wrong and what's missing; parts value counts.

What we don't buy: instruments with no resale market — low-value commodity items and obsolete equipment we can't resell, we'll decline honestly rather than haul away. Heavy, freight-size systems are priced strictly on value: freight is a real cost, so model and resale demand decide.

Ways to Sell

Sell for cash

Our standard route: written offer, we arrange the logistics, you're done.

Trade in

Put your old instrument's value toward anything in our store — trade-in credit is worth more than the cash offer for the same instrument. Trade-ins follow the same buying scope as cash purchases: if we wouldn't buy it for cash, we can't take it in trade.

Full-lab liquidation

Closing, moving, or downsizing a lab? We'll inventory everything with you, make one offer for the lot, and clear the space on your schedule.

Get an Offer

A formal offer needs real information — the details below are what our pricing is based on. Complete submissions get a formal offer within 1 business day.

Photos: front of the instrument / serial-number plate / screen after power-on / all included accessories in one shot. Video (best): 30–60 seconds — power it on, show the self-test or start screen, run one core function if you can.

In your message, please include for each instrument: brand & model / year / condition (fully working, powers on, not working, for parts) / configuration & what's included (computer, software & dongle, accessories) / source (where it's coming from and why it's being sold) / size & weight for large systems / a link to photos or a power-on video (Google Drive, Dropbox, or similar).

Frequently Asked Questions

Do you buy single instruments?

Yes. One instrument or a full laboratory — same process, same 1-business-day offer.

How is my offer calculated?

From real market data: completed sales and current listings for your exact model, adjusted for year, condition, configuration, and completeness (computer, software licenses/dongles, accessories). That's why a complete system is worth more — tell us everything that's included.

What if my instrument isn't working?

Yes — we actively buy non-working instruments, including units that are only good for parts. For these, detail matters even more: tell us what's wrong, what's missing, and send photos or a short video of what it does at power-on. Parts value is real value — don't assume a broken instrument is worthless.

Who pays for shipping or pickup?

Local New England pickups we can often handle in person. For larger systems, freight is arranged together with you and reflected in the written offer, so there are no surprises.

When do I get paid?

Payment timing and method are stated in your written offer before you commit to anything — what the offer says is exactly what happens.

What paperwork do you need?

For instruments used with biological or hazardous materials, a decontamination certificate. If the system includes licensed software, tell us the license/dongle status — it affects the price.

Why do you need so much detail — and a video?

Because two instruments with the same model name can differ by thousands of dollars: year, configuration, software dongles, and completeness decide the price. A short power-on video shows us the instrument actually works, so we can make a firm offer instead of a cautious one. More detail almost always means a better offer.

Do you buy everything?

No, and we'll tell you straight. We buy instruments that have a resale market — major-brand analytical and benchtop equipment, working or not. Very heavy systems are judged hardest on value, because moving them costs real money. If we can't resell it, we won't take it — and we'll say so in our reply, not waste your time.

Have a list ready? Send it over and get a formal offer within 1 business day.

info@onestopscientific.com

(339) 298-8018