Up for sale is my Ocean Optics HR4 Spectrometer in EXCELLENT condition that reads from 342nm to 1031nm.  This spectrometer is VERY high resolution while also having a long spectral range.  Please notice the 6th picture featuring an Ocean Optics HG-1 mercury argon light source (mercury argon light source not included).  The spectrometer features a 3648 pixel detector, a built-in second order light filter, and a 5um slit for super high resolution.   The slit is the Ocean Optics user changeable slit design so it is very fast and easy to change the slit to other sizes yourself. Thank you.

If you need a great Ocean Optics VIS light source with 10,000 hour bulb, I recommend this one:

https://www.ebay.com/itm/146996466257

If you are interested in any fiber cables that are compatible with this spectrometer, I recommend any of these Ebay ads:

https://www.ebay.com/itm/143963877114

https://www.ebay.com/itm/143378302171

https://www.ebay.com/itm/144348568371

https://www.ebay.com/itm/143934450240

I have been an eBay member since 2001 with excellent positive feedback.  If you have any questions please scroll up and click "contact seller". Thank you.