SUNA UV Nitrate Sensor


SUNA incorporates the proven MBARI-ISUS nitrate measurement technology, which is in extensive use worldwide.  What are the differences between the MBARI-ISUS and SUNA? (0)

SUNA is the latest advance in accurate and cost-effective nutrient monitoring. Features include:

  • Real time nitrate calculation
  • Full UV spectrum for maximum accuracy
  • Easy to use SUNACom software package
  • Simple software based in-field calibrations
  • Proven MBARI-ISUS technology
  • Corrosion proof titanium and acetal housing

SUNA is the logical choice for routine nitrate measurements in virtually any aquatic environment:

  • Lakes and rivers
  • Coastal estuaries
  • Drinking water reservoirs
  • Agricultural drainage systems




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  • Sackmann, B.S. (2011) Deschutes River Continuous Nitrate Monitoring. Quality Assurance Project Plan: Deschutes River Continuous Nitrate Monitoring, PUblication Number: 11-03-030 Read Now
  • Heffernan, J.B., Cohen, M.J. (2010) Direct and indirect coupling of primary production and diel nitrate dynamics in a subtropical spring-fed river. Limnol. Oceanogr., 55(2), 677 - 688.
  • Johnson K. (2010) Simultaneous measurements of nitrate, oxygen, and carbon dioxide on oceanographic moorings: Observing the Redfield ratio in real time. Limnol. Oceanogr., 55(2),615-627.
  • MacIntyre, G., Plache. B, M.R. Lewis., Andrea, J, Feener, S, McLean, S.D. (2009)ISUS/SUNA Nitrate Measurements in Networked Ocean Observing Systems. White Paper Read Now (354)
  • Prestigiacomo, A.R. (2009) Nitrate and Bisulfide: Monitoring and Patterns in Onondaga Lake, New York, Following Implementation of Nitrification Treatment, Prestigiacom, A.R, Effler, S.W., Matthew, D.A., Coletti, L.J., Water Environment Research, 81(5)
  • Johnson, K.S., Coletti. L.J. (2002) In situ ultraviolet spectrophotometry for high resolution and long-term monitoring of nitrate, bromide and bisulfide in the ocean. Deep Sea Research 49 1291-1305