Fast Cash Offers & Turnkey Service
About Us
Refined Instruments | Quality in Action
Refined Instruments specializes in buying and selling analytical laboratory equipment, particularly AB Sciex LC/MS/MS systems, with a focus on the 3200, 4000, and 4500 series.
If you're looking to sell, we purchase systems from anywhere in the U.S. and offer a cash payment. We also handle the packing and shipping ourselves, so you don't have to worry about logistics.
In addition, we refurbish instrument systems in-house with our skilled technicians to meet the original manufacturer's specifications.
For those looking to buy, Refined Instruments offers high-quality instruments for sale to customers throughout the U.S. We provide delivery, installation, and a standard 90-day warranty covering parts and labor. Extended warranties are available upon request
Dr. Shawn Desai, PhD, JD | CEO
Dr. Shawn Desai brings over two decades of laboratory experience, including 15 years in the clinical laboratory sector, to his role as CEO of Refined Instruments. A George W. Woodruff Scholar, he earned his Ph.D. in Chemistry from Emory University, followed by a J.D. from the University of Georgia School of Law. He is a board-certified High-Complexity Laboratory Director and remains in good standing with the State Bar of Georgia.
Dr. Desai has successfully owned and operated clinical laboratories and has extensive experience in selling analytical equipment to a wide range of medical laboratories, including physician office labs, reference labs, and hospital systems across the United States.
With his unique blend of scientific expertise, legal acumen, and operational leadership, Dr. Desai is committed to delivering exceptional value and partnership in every aspect of instrumentation sales.
BUY FROM REFINED INSTRUMENTS
Buying from Refined Instruments Is a No-Brainer
We don’t just sell lab equipment—we deliver peace of mind.
- 90-Day Parts & Labor Warranty – Every system is backed by our ironclad warranty. If something goes wrong, we make it right.
- We Come to You – No shipping chaos or third-party delays. We show up, install the system, and make sure it runs like a dream.
- Zero Hassle. All Support. – We’re fast, responsive, and easy to work with. No red tape. No runaround.
- One Call, That’s All – From purchase to install, we handle it all. You focus on the science—we’ll take care of the rest.
Looking for reliable lab equipment with zero drama?
Refined Instruments has you covered.
SELL TO REFINED INSTRUMENTS
WE ARE LOOKING TO BUY!
Refined Instruments is Actively Purchasing AB Sciex 4500 LC/MS/MS Systems
We are currently seeking to purchase AB Sciex 4500 LC/MS/MS systems, including:
- Mass spectrometers
- HPLC modules
- Autosamplers
- Nitrogen generators
We provide CASH offers and handle everything from deinstallation to removal. Our experienced team will come onsite personally, so your staff can relax and focus on what matters most.
If you have a system available or know of one coming offline, contact us today — we make it easy.
INVENTORY
SOLD OUT - NEW INVENTORY COMING SOON!
Thank you for your interest — our AB Sciex systems are currently sold out due to high demand.
Good news: We will have additional units available shortly.
To reserve or be the first to know when new inventory arrives, please reach out:
AB Sciex 4500 System - SOLD!
The desirable AB Sciex 4500 LC/MS/MS mass spectrometer system with Shimadzu HPLC, Shimadzu autosampler and battery backup.
Like-new condition. We refurbished it and it is running like a dream.
Pricing includes shipping, installation, and 90 day parts and labor warranty.
This won't last long! Inquire now!
OUR WARRANTY
🛠️ 90-Day Parts & Labor Warranty
At Refined Instruments, we stand behind every system we sell.
That’s why all qualifying instruments come with a 90-day Parts & Labor Warranty, giving you peace of mind from the moment your equipment arrives.
What’s Included:
- Full coverage on parts and labor for 90 days
- Direct support from our in-house technical team
- Fast turnaround on any covered issues
- No third-party hassles — we handle it all
We’re committed to your lab’s success. If something goes wrong, we’ll make it right — quickly and professionally.
📩 Questions?
SALES REPS
JOIN OUR REFERRAL PROGRAM!
Know Someone Buying or Selling LC/MS/MS Equipment? Get Paid!
Refined Instruments is seeking independent sales reps and referral partners!
Just send us a lead — a buyer or seller of LC/MS/MS systems (AB Sciex) — and you’ll earn a strong referral fee when we close the deal.
- ✅ No pressure, no quotas
- ✅ No need to be a lab expert
- ✅ Just connect us — we’ll handle the rest
Easy money. Real rewards.
Start earning today! Contact us!