USGS Ohio Water Science Center

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Ohio Water Microbiology Lab

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Ohio Water Science Center

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USGS Water Science Centers are located in each state.

There is a USGS Water Science Center office in each State. Washington Oregon California Idaho Nevada Montana Wyoming Utah Colorado Arizona New Mexico North Dakota South Dakota Nebraska Kansas Oklahoma Texas Minnesota Iowa Missouri Arkansas Louisiana Wisconsin Illinois Mississippi Michigan Indiana Ohio Kentucky Tennessee Alabama Pennsylvania West Virginia Georgia Florida Caribbean Alaska Hawaii New York Vermont New Hampshire Maine Massachusettes South Carolina North Carolina Rhode Island Virginia Connecticut New Jersey Maryland-Delaware-D.C.


Quality Assurance/Quality Control Manual: Ohio Water Microbiology Laboratory


Specific Conductance, pH, and Turbidity Meters
meterWith each use of the specific conductance, pH, or turbidity meter, calibrate the instrument according to the manufacturer’s instructions (kept with the meter). Use a calibrated solution that is within the range of the water sample to be measured. Label specific conductance and pH buffer solutions with the date opened and discard working solution weekly. Each piece of equipment has a daily logbook; record all calibrations in the appropriate logbook.


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