When you're setting up a spectroscopy analysis and detection bench, a used Ocean Optics USB2000 can deliver solid optical measurements without a new-instrument price tag. Two used units are competing for your attention: the USB2000+ variant with a tested, recalibrated wavelength range and bundled software, and the original USB2000 in excellent condition with only a handful of uses behind it. Both are compact fiber-optic spectrometers from the same family, so the real decision is about calibration assurance, condition, and what comes in the box.
Quick Verdict
If you want a ready-to-run unit with recalibration handled and software included, the USB2000+ (Tested) at USD 418.00 is the more complete package. If you'd rather have a barely used original USB2000 with a clean, low-hours history, the USD 450.00 excellent-condition unit is hard to beat.
At a Glance
| Consideration | USB2000+ (Tested) | USB2000 (Excellent Condition) |
|---|---|---|
| Price | USD 418.00 | USD 450.00 |
| Condition | Used | Used |
| Model | USB2000+ | Ocean Optics USB2000 |
| Key emphasis | Recalibrated wavelength range, software included | Barely used, excellent physical condition |
Where Each Spectrometer Wins
- Choose the USB2000+ (Tested) for spectroscopy analysis and detection where wavelength accuracy matters most. Its listing states a re-calibrated range of 340-1034nm and a deviation under 0.3nm, and it comes with a permanently valid software license.
- Choose the USB2000 (Excellent Condition) for a near-mint original unit that looks and acts like it was barely touched. If you already have software and a calibration routine, this is the cleaner starting point.
Product Notes
Ocean Optics USB2000+ USB2000+ Spectrometer (Tested)
The USB2000+ is the more fully specified of the two for spectroscopy analysis and detection. Its wavelength range is quoted at 340-1034nm, and the seller says it is recalibrated before shipment to keep deviation under 0.3nm. That makes it a strong candidate if you need near-ultraviolet and visible measurements with a known calibration baseline. It also includes permanently licensed software, so you can start collecting data without a separate software purchase. The main limitation is the wavelength window: anything below 340nm is not covered, so deep-UV work is off the table. If your applications sit within that range, this tested unit is the one to beat.
Ocean Optics USB2000 USB Spectrometer, Excellent Condition
The excellent-condition USB2000 takes a different approach. Instead of emphasizing recalibration and software, the listing focuses on physical state: it was used only a handful of times and is described as looking nearly untouched. For buyers who prefer a clean, low-hours used instrument and already have their own acquisition software and calibration routine, this can be the more straightforward path. The tradeoff is that the listing emphasizes condition rather than calibration or software, so it suits buyers who already have those pieces in place. It is also the higher-priced listing of the two. If your priority is a lightly used original USB2000 rather than a USB2000+ with recalibration, this is the one that fits.
Final Choice by Use Case
For near-UV and visible spectroscopy analysis and detection with calibration and software already arranged, the USB2000+ (Tested) gives you more assurance at a lower price. For a barely used, excellent-condition original USB2000 when you already have a workflow, the USB2000 is the cleaner pick. Both are used Ocean Optics USB2000 family instruments, so your decision should hinge on whether you want the tested, software-ready package or the low-hours original.
