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Laboratory Electrodes

Item# PHE3216

In stock

Lead Time (If not in stock): 0 week
Laboratory Electrodes PHE3216 PHE3216
  • pH Range: 0 to 14 pH
  • Temperature Range:
    -5 to 100°C
    (23 to 212°F)

  • Accuracy Value ±0.02 pH
  • impedance 60 MΩ at 25°C (77°F)
  • Response time 95% in 10 seconds
  • Sodium Error 0.05 pH in 0.1 molar Na+ ion at 12.8 pH
Laboratory procedures often require the use of a separate reference electrode. Several standard methods and techniques for pH measurement, and most uses of ion selective electrodes, require the use of a “double junction” reference electrode. The PHE-3216D is an ideal choice for such application. These gel-filled electrodes feature a replaceable porous PTFE liquid junction in a polymer body. They are supplied ready to use with a saturated potassium chloride-silver reference cell. The double junction version uses potassium nitrate as the screening electrolyte although it can easily be replaced with the electrolyte of your choice. The large surface are liquid junction provides a stable, low impedance contact to the solution assuring fast and accurate measurements. The chemically inert nature of PTFE makes the sensor difficult to foul and easy to clean.
Lab insertables are designed for pH measurement inside narrow vessels. Small volumes in test tubes or solutions in large Erlenmeyer flasks can be conveniently measured using one of these responsive electrodes. The PHE-1523 is a glass-bodied, refillable, combination pH electrode. The 5-inch insertion length allows measurement in test tubes and other narrow vessels. This electrode features full span, fast response pH glass and has a high flow porous PTFE reference junction, making it a must for any laboratory.

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