Hello Ecologgers!

I work on Midway Atoll NWR as a wildlife biology volunteer and I'm 
helping to set-up monitoring efforts to determine environmental/weather 
factors affecting the occurrence of botulism outbreaks among 
ponds/freshwater seeps around the atoll. We would like to monitor for a 
variety of factors and I was wondering if any of you have 
recommendations for devices (preferably devices that can do multiple 
functions and are not cost-prohibitive) to measure the following:
-water temperature
-water salinity
-water pH
-conductivity
-water salinity
-redox potential
-turbidity
-dissolved oxygen

Thank you!

~Wieteke Holthuijzen

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