| Manufacturer: | TriOS |
| Instrument/sensor: | OPUS |
| Measurement type: | submersible |
| Variable(s): | Nutrients (nitrate) |
| Brief description: | UV spectral sensor |
| More info: | https://www.trios.de/en/opus.html |
| Contact: | https://www.trios.de/en/contact.html |
| References: |