When you're shopping for a used instrument for spectroscopy analysis detection, the first decision is not brand. It's how you'll actually work. Will you carry a meter to a light source, or will the instrument stay on a bench connected to a computer? That question separates the UPRtek MK350 Digital Spectrometer LED Meter Kit from the Ocean Optics USB2000 USB Spectrometer.
Quick verdict
If you want a self-contained meter with a screen and a carry kit, the UPRtek MK350 is the more complete package. If you want a straightforward USB optical spectrometer for a fixed setup, the Ocean Optics USB2000 is the more focused instrument, though its listed price is higher.
Comparison table
| Product | Listed Price | What you get |
|---|---|---|
| UPRtek MK350 Digital Spectrometer LED Meter Kit | USD 350.00 | Handheld meter with illuminated display; measures CCT, CRI, CIE1931/1976 and spectrum distribution; includes hard case, soft case, adapter, and PC cord |
| Ocean Optics USB2000 USB Spectrometer | USD 450.00 | USB-connected optical spectrometer; used only a handful of times according to the seller |
Where each product wins
The UPRtek MK350 wins when you need portability. It can be used without a computer, and the kit comes with the extras you would likely need. The seller describes the unit as like new, with the battery at 100% after being charged a week earlier.
The Ocean Optics USB2000 wins when you need a dedicated optical spectrometer for a bench setup. It connects via USB, so it fits a workflow where a computer is already part of the chain. The seller describes the unit as very lightly used.
Product notes
UPRtek MK350 Digital Spectrometer LED Meter Kit, Hard Case & adapter
If your work takes you to light sources rather than bringing them to the bench, the MK350 is the more self-contained option. It has an illuminated display, runs on battery, and can operate without a computer. According to the seller, it is like new, was charged a week ago, and still showed 100% battery. The kit includes a soft case, hard case, adapter, and PC cord, so you're not starting from scratch. The main limitation is its specialization: the MK350 is a portable LED meter for evaluating artificial sources such as LED and OLED, with measurements including CCT, CRI, CIE1931/1976 and spectrum distribution. If you need a general-purpose lab optical spectrometer, this is less of an instrument for that purpose. At the listed price of $350, the value leans toward buyers who want a ready-to-carry meter and basic accessories.
Ocean Optics USB2000 USB Spectrometer, excellent condition
The USB2000 is a straightforward USB-connected optical spectrometer, not a handheld meter. The seller describes it as very lightly used, which appeals to buyers who care about getting a clean unit. The main limitation is that it depends on a computer to be useful; as a USB instrument, it needs a computer to display and process spectra. That works well if your bench already has a computer setup, but it makes the $450 price harder to justify when the lower-priced competitor comes with a full kit and more self-contained operation.
Final choice by use case
Choose the UPRtek MK350 if you need a field-ready LED meter for checking artificial light sources and want a complete kit. Choose the Ocean Optics USB2000 if you plan to leave the instrument plugged into a computer and need a compact USB optical spectrometer for bench work.
