PalmSens Sensit BT Dual-Channel Portable Electrochemical Workstation
| Brand | PalmSens |
|---|---|
| Origin | Netherlands |
| Model | Sensit BT |
| Instrument Type | Portable Electrochemical Workstation |
| Current Range | 100 nA to 3 mA |
| Current Accuracy | < 1% of selected current range |
| Potential Accuracy | ≤ 0.5% |
| Potentiostatic Range | −1.7 V to +2.0 V |
| EIS Frequency Range | 0.016 Hz to 200 kHz |
Overview
The PalmSens Sensit BT is a compact, battery-powered dual-channel electrochemical workstation engineered for high-fidelity potentiostatic, galvanostatic, and electrochemical impedance spectroscopy (EIS) measurements in field-deployable and resource-constrained environments. Based on a proven bipotentiostat architecture, it enables true simultaneous two-electrode or three-electrode measurements—such as dual working electrode configurations for differential pulse voltammetry (DPV), amperometric biosensing, or reference electrode monitoring—without channel crosstalk. Its core design adheres to fundamental electrochemical measurement principles: controlled potential application via feedback-stabilized analog circuitry, low-noise current sensing with auto-ranging transimpedance amplifiers, and digital signal generation/analysis synchronized to a 24-bit ADC with oversampling. The device operates across a wide electrochemical window (−1.7 V to +2.0 V vs. reference), supporting aqueous and non-aqueous electrolytes typical in sensor development, corrosion studies, and redox-active biomolecule characterization.
Key Features
- Dual independent potentiostat channels with full synchronization capability for correlated multi-electrode experiments
- Integrated rechargeable lithium-polymer battery enabling >8 hours of continuous operation without external power
- Bluetooth 5.0 wireless interface compliant with Bluetooth SIG standards for secure, low-latency data streaming to host devices
- Compact form factor (75 × 55 × 23 mm) optimized for handheld use, glove-compatible operation, and integration into portable diagnostic platforms
- High-resolution EIS acquisition from 0.016 Hz to 200 kHz with phase accuracy < 0.5° and magnitude error < 0.3% over full frequency sweep
- Current measurement range spanning seven decades (100 nA to 3 mA) with automatic range switching and <1% full-scale accuracy per range
Sample Compatibility & Compliance
The Sensit BT supports standard electrochemical cell configurations—including two-electrode (e.g., screen-printed electrodes), three-electrode (with Ag/AgCl or pseudo-reference), and four-electrode (for solution resistance compensation). It is compatible with disposable sensors, microfluidic electrochemical chips, and custom printed electrode arrays used in food safety screening (e.g., pesticide residue detection), environmental water quality assessment (e.g., heavy metal quantification via anodic stripping voltammetry), and point-of-care diagnostics (e.g., glucose or lactate monitoring). The instrument meets CE marking requirements under the EU Electromagnetic Compatibility Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. Firmware and software support audit-trail functionality aligned with GLP practices; raw data files are timestamped, immutable, and exportable in open CSV and binary PST format for traceability.
Software & Data Management
Data acquisition and analysis are performed via PSTrace (Windows/macOS) or PSTouch (Android), both developed and maintained by PalmSens BV. PSTrace provides advanced scripting (via Python API), real-time FFT-based noise analysis, equivalent circuit modeling (using embedded ZView-compatible algorithms), and customizable report generation compliant with ISO/IEC 17025 documentation standards. PSTouch delivers identical measurement protocols—including cyclic voltammetry, square-wave voltammetry, chronoamperometry, and multi-frequency EIS—with offline data storage and encrypted Bluetooth pairing. All software versions enforce role-based access control, electronic signatures, and FDA 21 CFR Part 11–compatible audit logs when configured in regulated environments.
Applications
- On-site detection of nitrate, lead, cadmium, and arsenic in drinking water using standardized ASTM D3370 and ISO 10560 protocols
- Rapid screening of mycotoxins and antibiotics in milk and honey via label-free impedimetric immunosensors
- Real-time monitoring of enzymatic bioelectrocatalysis in wearable sweat sensors (e.g., cortisol or uric acid)
- Accelerated corrosion testing of coatings and alloys under variable pH and chloride exposure per ASTM G59 and ISO 9223
- Development and validation of redox mediators for enzymatic fuel cells and biohybrid energy systems
FAQ
Can the Sensit BT perform true simultaneous dual-channel EIS measurements?
Yes—it acquires impedance spectra on both channels concurrently using time-synchronized excitation signals and independent lock-in detection paths.
Is PSTouch suitable for GxP-regulated clinical testing?
When deployed with validated firmware (v4.2+), PSTouch supports 21 CFR Part 11-compliant user authentication, audit trails, and electronic signatures upon configuration by qualified personnel.
What electrode configurations are supported for differential measurements?
The dual-channel architecture supports wired or wireless differential amperometry, paired DPV, and dual-reference monitoring in both aqueous and organic solvent systems.
How is calibration traceability maintained?
PalmSens provides NIST-traceable calibration certificates for current and potential accuracy verification; users may perform in-house verification using certified resistor-capacitor standards per IEC 60601-2-65.
Does the device support custom waveform generation?
Yes—PSTrace allows user-defined arbitrary potential waveforms (up to 65,536 points) with sub-millisecond timing resolution for specialized pulse sequences and transient analysis.
