Instrument: pH Sensor

Instrument: 
Instrument Short Name: pH Sensor
Instrument Description:

An instrument that measures the hydrogen ion activity in solutions.

The overall concentration of hydrogen ions is inversely related to its pH.  The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+). 

PI supplied instrument name: Hach® HQ40d portable meter with a PHC201 standard pH-probe
Dataset-specific description

handheld pH probe