ISE-8 Sensor Specification
8-Ion Multi-Sensor
Measurement System
Simultaneous solid-state potentiometric measurement of eight major ionic species in a single pass. Nernstian response across monovalent and divalent ions, calibrated with application-specific multi-ion solution series. Replacement ISE chips available for all sensor positions.
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View and buy the CG250| Ion | Cal. Solution 1 (low) | Cal. Solution 2 (×10) | Cal. Solution 3 (×20) | Working range |
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Multi-ion solution series
Each application ships with a matched 3-point calibration set. Solutions span a decade of concentration (Sol. 1 → Sol. 2, 10× step) ensuring robust Nernstian slope determination and R² ≥ 0.999.
Simultaneous calibration
All 6–8 sensors are calibrated in a single immersion sequence, eliminating inter-session drift. Application-specific solution compositions reflect realistic ion ratios for the target matrix.
Nernstian response
Monovalent ions (K⁺, Na⁺, NH₄⁺, Cl⁻, NO₃⁻): ±59 mV/decade. Divalent ions (Ca²⁺, Mg²⁺): +29 mV/decade. Phosphate exhibits anomalous response: −30 mV/decade.
Solid-state construction
No internal reference solution or liquid junction required. Robust to field conditions, compatible with flow-through and immersion deployment. Electronics developed in partnership with Zealquest (China).