PH Measurement

Legacy ISFET pH Probes for use with SI400 and SI600 meters

Model Number
Legacy ISFET wired probes
$ 550.00 USD
Standard Lead Time
1-2 weeks

SI Series Non-Glass ISFET pH probes for general purpose, small volumes, penetrating hard objects, and laboratory use.

  • General use: ConeFET P/N: 3380-100
  • Small Volimes: CupFET P/N: 3320-100
  • Penetrating hard object: LanceFET P/N: 2370-100 or LanceFET+Handle P/N: 2274-010
  • Laboratory use: MicroFET P/N 9370-100 or MiniFET P/N: 9202-010

Important note: These probes will only work with the now obsolete SI400 and SI600 ISFET pH meters.

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Key Specifications

Sensor Type
Glass-free Ion Sensitive Field Effect Transistor (ISFET) semiconductor
pH Range / Temp Range
0.00 to 14.00 | 0 to 80C
+/- 0.02 pH
0.02 pH
Typical 24 Hour Drift
0.05 pH/day and lower
1, 2, and 3 point
Calibration Buffer Types
NIST, DIN, JIS, Sentron
Automatic Temperature Compensation (ATC)
Probe Material
Peek/ABS for ConeFET, CupFET, and LanceFET (SS tip) | PEEK for MicroFET
Power Supply
(3) AA NiMh

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