We buy surplus instruments
Retired analyzers. CEMS spares. A shelf of parts nobody has touched in many years. Working, dead or parts‑only — send a photo of the tag and a written offer comes back.
- We arrange freight anywhere in the continental US
- Paid on pickup
- No obligation, no fee
BA2 warehouse, analyzer rack
Purchased, tested, ready to sell
Most of it was never broken
A CEMS rack gets replaced because a permit changed, not because the analyzers stopped working.
A lab consolidates and a good bench goes into storage. A tech retires and thirty years of spares sit until someone needs the room. Eventually it is scrapped for weight — while somewhere else a plant hunts for a detector board the manufacturer discontinued eight years ago.
Thirty-five years with this equipment is why we can price a unit from a photo of its data tag, and why we will gladly take one that does not power up. We test it, repair what is worth repairing, and put it back into a plant that needs it. The rest is parted out.
What we buy
Six of the main categoriesNot a wish list. These are the nameplates that come through most often — and the parts inside them are most of the business. They are not the whole of it: we buy well beyond these six, so ask about anything not shown here.
Gas Analyzers & CEMS
Thermo Environmental / TECO · Teledyne API 200 & 300 series · CAI 600 series NOx and tri‑gas · Servomex 1440 paramagnetic · Siemens · Fuji
Analyzer Spares & Boards
Scrubber assemblies · detector and preamp boards · IR source assemblies · critical flow orifices · sintered filters · o‑ring and rebuild kits · data plugs
Sample & Vacuum Pumps
Air Dimensions Dia‑Vac · Gast rotary vane and diaphragm · Thomas · KNF · Parker miniature diaphragm · Dekker · rebuild kits and motors
Flow, Pressure & Temperature
Dwyer flowmeters and Minihelic gauges · Setra differential transducers · McMillan flow sensors · Omega thermocouple hardware · panel meters · controllers
Gas Handling & Conditioning
Perma Pure Nafion dryers · Baldwin heated probes and lines · Scott Specialty Gases regulators · CGA fittings · sample conditioning and coolers · pressure switches
Valves, Fittings & Consumables
Needle and metering valves · Parker solenoid valves · CGA and NPT fittings · Whatman QMA quartz microfiber · Millipore glass fiber · sealed shelf stock
It goes to a real warehouse
Not a driveway and not a storage unit. Racked, labelled, tested and listed.
Everything comes back here to be identified, bench-tested and photographed. That is why we can price a lot from photos — and why you can hand us an unsorted pallet without working out what is on it first.
All four are worth money
Conditions acceptedThe state it is in changes the number. It does not change whether we want it.
Working
& calibrated
Highest value, and the fastest to redeploy.
Untested
or unknown
Most of what we buy. We do the testing, so you do not have to.
Not
working
A failed detector does not devalue the pump, the boards, the manifold or the cabinet.
Parts-only
or incomplete
Missing a display, a door or a manual is not a problem. Send it anyway.
Scrap value is weight. A retired analyzer is usually worth many times that — the detector, the pump, the boards and the spares in the cabinet with it. Checking costs one email.
What we can actually show you
The record, such as it isThis business has been running since 2016 and this website is new. Rather than quote reviews we do not have, here is what can be checked.
A public selling record
The recovered equipment is sold under Q&W Instruments on eBay: 884 items sold at 99.5% positive feedback. That record is about the selling side, not the buying side, and it is public, so read it yourself before you send us anything. Sellers who look it up are seeing the same thing a buyer sees.
Q&W Instruments feedback on eBay
Photographs of the actual room
Every photo on this site is inventory sitting in the Broken Arrow warehouse. The hand-written TESTED stickers, the numbered racks, the aisle markers, the packing bay. No stock photography. If you want a shot of a specific corner of it before you commit a pallet, ask and you will get one.
The offer shows its work
Offers arrive in writing with the reasoning attached: what each item was identified as, what comparable units and parts have been selling for, and what we assumed about condition. If a line looks wrong to you, you can argue with it, because you can see it.
Buying, not selling?
The recovered equipment is listed through Q&W Instruments on eBay, where the feedback record is public: 884 items sold at 99.5% positive.
Analyzer spares, sample pumps, regulators, boards, and the discontinued components the OEM will not quote at any price. Everything runs through eBay, so tracked shipping and buyer protection are handled — and every listing states plainly what was tested and what was not.
Before you send anything
Do you buy equipment that does not work?
Yes — non-working, untested and parts-only equipment is a large share of what we buy. A dead analyzer still holds a good detector, a pump, a board set and a bench of spares other plants need.
What information do you need to make an offer?
A photo of the nameplate or data tag — it carries the manufacturer, model and serial. Beyond that: roughly how many items, whether they run, and where they are. An export from your asset system works too.
Do you buy loose parts, or only whole instruments?
Parts are most of our business: scrubber assemblies, detector and preamp boards, IR sources, critical orifices, sintered filters, o-ring kits, sample pumps. A shelf of unopened spares is often worth more than the instrument it came out of.
Do I have to pack and ship it?
No. Beyond a small box we arrange the freight, and we agree how a bigger lot comes out before anything moves. Plant cleanouts are handled entirely on our side.
What happens to the equipment after you buy it?
It is tested, cleaned and repaired where that makes sense, then listed through Q&W Instruments, our sales channel. What cannot be recovered is parted out, so the good components stay in service instead of going to scrap.
Giving industrial equipment a second life.
Recover / Repurpose / Redeploy