Wednesday, October 26, 2011

Vernier pH sensor

The pH Sensor just as you would a traditional pH meter with the additional advantages of automated data collection, graphing, and data analysis. Typical activities using our pH sensor include:
  • Acid-base titrations
  • Studies of household acids and bases
  • Monitoring pH change during chemical reactions or in an aquarium as a result of photosynthesis
  • Investigations of acid rain and buffering
  • Analysis of water quality in streams and lakes


  • Type: Sealed, gel-filled, epoxy body, Ag/AgCl
  • Response time: 90% of final reading in 1 second
  • Temperature range: 5 to 80°C
  • 12 mm OD Range: pH 0–14
  • Resolution: 0.005 pH units (LabQuest, LabQuest Mini, Go!Link, LabPro)
  • Isopotential pH: pH 7 (point at which temperature has no effect)
  • Output: 59.2 mV/pH at 25°C; voltage1.75 V @ pH = 7; The output voltage is inversely proportional to the pH value (0.25V / pH)
  • Interface to the PC can use the Vernier Go® Link, Vernier EasyLink ®Vernier SensorDAQ ®etc.