Electrochemical Testing Solutions

Key to assessing material quality

Electrochemical measurements are essential for understanding and optimizing material properties in batteries, capacitors, fuel cells, and electrolysis systems. HIOKI measurement systems combine precise measurement technology with intelligent software providing quantitative data to assess conductivity, dispersion, interface resistance, and impedance behavior – key factors for performance, quality, and reliability in battery, fuel cell, and electrolysis applications.

SA2634-KIT Slurry Analysis System: Evaluate slurry conductivity and dispersion before coating.
RM2610 Electrode Resistance Measurement System: Analyze Li-ion electrode sheets after coating.
ALDAS Fuel Cell Analyzers : Perform EIS analysis from lab cells to large-scale stacks.

For battery cells and supercapacitors, the IM3590 supports impedance characterization with frequency sweep and equivalent circuit analysis.

10 Products

SA2634-KIT

HIOKI SA2634-KIT - Slurry Analysis System for LiB Conductivity Evaluation

Software-based slurry analysis system for lithium-ion batteries, evaluates slurry conductivity and dispersion through DCR, R-ratio and Uniformity; impedance measurements 4 Hz to 8 MHz, for aqueous and NMP-based slurries

RM2610

HIOKI RM2610 - Measurement System for LIB battery electrode sheets

Electrode Resistance Measurement System, isolates and quantifies the composite layer resistivity and the interface resistance between the composite layer and the aluminum or copper current collector foil of LIB electrode sheets in a single measurement

ALDAS-Mini

ALDAS-Mini – Compact EIS Analyzer for Electrolysis Cell Development

The ALDAS-Mini is a compact, high-performance electrolysis cell analyzer designed to accelerate R&D in hydrogen production technologies. Using advanced electrochemical impedance spectroscopy (EIS), it provides deep insights into the internal behavior of electrolysis cells, enabling engineers to optimize efficiency, reduce energy losses, and improve the performance of electrolysis cells and stacks. The cell analyzer can be connected to existing test setups without modifications to the existing electrolysis system, making it ideal for flexible usage in both laboratory and industrial environments. ALDAS-Mini supports a wide range of electrolysis technologies - including PEM, SOEC, AEM, and alkaline systems, which ensures compatibility across different development platforms. A key differentiator is its ability to perform impedance measurements under real high-current operating conditions, handling electrolysis currents from a few amperes up to 2000 A. Combined with simultaneous multi-cell measurement up to 8 cells, ALDAS-Mini enables efficient comparative analysis within cell stacks, significantly improving testing throughput and enabling faster identification of performance differences and degradation effects. With high noise immunity and precise current sensing, the ALDAS-Mini delivers stable and reliable measurement results - even in demanding environments. This makes it - making it a powerful tool for advancing next-generation hydrogen technologies. The ALDAS-Mini complements the ALDAS lineup as a compact solution alongside the high-speed ALDAS-α and the high-power ALDAS-E. Technical Specifications Electrochemical impedance spectroscopy (EIS) for electrolysis cells and stacksStack voltage range: up to 60 VElectrolysis current range: up to 2000 AMulti-channel measurement: up to 8 cells simultaneously Compatible with PEM, SOEC, AEM, AWE technologies High noise immunity for stable measurements

ALDAS-α

ALDAS-α: High-Speed EIS System for Real-Time Impedance Analysis

The ALDAS-α is a high-performance electrochemical impedance spectroscopy (EIS) system designed for analyzing fuel cells and water electrolysis. While conventional current-voltage (I-V) measurements are widely used to evaluate overall cell performance, they are limited in identifying the underlying causes of performance changes or degradation. Using EIS, the ALDAS-α enables a deeper analysis by quantitatively evaluating and separating complex electrochemical phenomena within the cell. This provides a more detailed understanding of internal processes. Thanks to its high-precision current sensing technology, the system delivers stable and accurate impedance data from very low frequencies, ensuring reliable and easy-to-interpret results. A key benefit of the ALDAS-α system is its fast measurement speed, completing scans in less than 8 minutes [OW2.1]- significantly reducing test time compared to conventional systems. With support for simultaneous multi-channel measurements up to 8 cells and up to 20 A DC output, the ALDAS-α system reduces development time considerably. The ALDAS-α is the ideal choice for high-speed, multi-channel EIS measurements in R&D environments where precision and efficiency matter most. It is one of HIOKI’s EIS measurement solutions, alongside the compact ALDAS-Mini and the high-power ALDAS-E.Technical Specifications Electrochemical impedance spectroscopy (EIS) for fuel cells and water electrolysisVoltage measurement range: 60 mV to 20 V Frequency range: high to low frequency sweep (e.g. 10 kHz to 100 kHz) Measurement speed: approx. 7.6 minutes (multi-channel, fast mode) Multi-channel capability: up to 8 cells simultaneously DC output: up to 20 A without external DC power supply

ALDAS-E

ALDAS-E – EIS Measurement System for kW to MW-Class Electrolysis and Fuel Cell Stacks

The ALDAS-E is a high-performance electrochemical impedance spectroscopy (EIS) system designed for in-operation analysis of large-scale electrolysis and fuel cell stacks. It enables precise impedance measurement under real operating conditions, enabling engineers to evaluate performance, identify losses, and monitor degradation in kW to MW-class-fuel cell and electrolysis systems. A key strength of the system is its ability to handle very high currents. By combining multiple current sensors, ALDAS-E supports measurements up to 10 kA, while still detecting small AC signals within noisy DC environments, which is critical for realistic stack evaluation. The ALDAS-E system offers scalable multi-channel measurement up to 48 channels, enabling simultaneous observation of both total stack behavior and individual cell performance. This makes it ideal for detailed stack diagnostics, comparative analysis, and electrolysis and fuel cell stack optimization. Despite the complexity of large-scale systems, ALDAS-E is designed for easy integration, connecting to existing setups without requiring dedicated power supplies or system modifications. The fast EIS measurement below 8 minutes and its high stability down to low frequencies, ALDAS-E significantly reduces evaluation time while maintaining high accuracy.ALDAS-E represents the high-end solution for applications that go beyond the scope of the high-speed ALDAS-α and the compact ALDAS-Mini. Technical SpecificationsMeasurement targets: electrolysis cells, fuel cells stacks, MW-electrolyzersFrequency range: 10 mHz to 100 kHz Measurement current: up to 10 kA (with combined sensors) Multi-channel capability: 1 to 48 channels Measurement voltage: 1.5 V to 1000 V

IM3590

HIOKI IM3590 - Chemical Impedance Analyzer, 1 mHz to 200 kHz

Chemical impedance analyzer, 1 mHz to 200 kHz, battery mode with automatic DC bias up to 5 V, frequency sweep and equivalent circuit analysis, ±0.05% basic accuracy, USB and handler I/O, optional LAN, RS-232C and GP-IB

€8,328.00

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RM9004

HIOKI RM9004 - Probe Head for RM2610 Electrode Sheet Measurement System

Replaceable probe head for the RM2610 Electrode Sheet Measurement System with 46 spring-loaded measurement pins (75 µm each) and a contact area of just 1 mm²

€9,508.00

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HIOKI SA2634 KIT slurry analysis system impedance measurement

SA9002

SA9002 - Fixture for slurry measurement with IM3536

Impedance measurement fixture for slurry analysis; connects to IM3536 LCR Meter via 4 BNC terminals; for use with disposable sample containers SA9001 / SA9001-01

€2,518.00

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SA9001

SA9001 - Slurry sample container for NMP-based slurry measurement

Slurry sample containers for NMP-based lithium-ion battery slurries, nickel-plated electrodes, for use with SA9002 Test Fixture, pack of 50

€208.00

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SA9001-01

SA9001-01 - Slurry sample container for aqueous slurry measurement

Slurry sample containers for aqueous (water-based) lithium-ion battery slurries, gold-plated electrodes, for use with SA9002 Test Fixture, pack of 50

€288.00

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SA2634-KIT: Evaluate slurry conductivity and dispersion before coating

The HIOKI SA2634-KIT enables standardized evaluation of lithium-ion battery slurry quality before coating. By combining frequency-sweep impedance measurement from 4 Hz to 8 MHz with automated equivalent-circuit fitting, the system quantifies slurry conductivity and dispersion using three proprietary metrics: DCR, R-ratio, and Uniformity.

As a complete solution, the kit combines dedicated measurement software with the full hardware setup – from the LCR Meter and fixture to dedicated slurry sample containers for both aqueous and NMP-based slurries – supporting formulation development, process optimization, and quality control from R&D to production.

SA2634-KIT

HIOKI SA2634-KIT - Slurry Analysis System for LiB Conductivity Evaluation

Software-based slurry analysis system for lithium-ion batteries, evaluates slurry conductivity and dispersion through DCR, R-ratio and Uniformity; impedance measurements 4 Hz to 8 MHz, for aqueous and NMP-based slurries

SA9002

SA9002 - Fixture for slurry measurement with IM3536

Impedance measurement fixture for slurry analysis; connects to IM3536 LCR Meter via 4 BNC terminals; for use with disposable sample containers SA9001 / SA9001-01

€2,518.00

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SA9001

SA9001 - Slurry sample container for NMP-based slurry measurement

Slurry sample containers for NMP-based lithium-ion battery slurries, nickel-plated electrodes, for use with SA9002 Test Fixture, pack of 50

€208.00

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SA9001-01

SA9001-01 - Slurry sample container for aqueous slurry measurement

Slurry sample containers for aqueous (water-based) lithium-ion battery slurries, gold-plated electrodes, for use with SA9002 Test Fixture, pack of 50

€288.00

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Analyze Li-ion electrode sheets before cell assembly

The HIOKI RM2610 Electrode Resistance Measurement System provides a unique method for quantitative evaluation of lithium-ion battery electrode sheets. It separately calculates composite layer volume resistivity and interface resistance between the composite layer and the current collector. These resistance parameters are difficult to isolate with conventional methods.

This enables the assessment of electrode quality before cell assembly, helping to save time in development and reduce the need for later-stage trial-and-error. The same method also benefits production, where the RM2610 supports regular quality checks before electrodes are built into cells.

RM2610

HIOKI RM2610 - Measurement System for LIB battery electrode sheets

Electrode Resistance Measurement System, isolates and quantifies the composite layer resistivity and the interface resistance between the composite layer and the aluminum or copper current collector foil of LIB electrode sheets in a single measurement

RM9004

HIOKI RM9004 - Probe Head for RM2610 Electrode Sheet Measurement System

Replaceable probe head for the RM2610 Electrode Sheet Measurement System with 46 spring-loaded measurement pins (75 µm each) and a contact area of just 1 mm²

€9,508.00

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Advanced EIS Solutions for Electrolysis and Fuel Cell Development

Precise electrochemical impedance spectroscopy (EIS) helps evaluate fuel cells and electrolysis systems supporting the progress of hydrogen technology from lab research to development of electrolyzers for commercial production.

HIOKI’s three ALDAS fuel cell analysis systems enable advanced EIS testing from R&D to commercial hydrogen production. They analyze internal resistances, reaction kinetics, and degradation mechanisms beyond conventional I-V testing - supporting faster development and validation from single cells to large-scale stacks. The portfolio includes three scalable solutions:

ALDAS- α for compact, flexible electrolysis cell analysis in laboratory environments
ALDAS- Mini for high-speed, multi-channel EIS measurements in advanced R&D
ALDAS-E for in-operation analysis of kW to MW-class fuel cell and electrolysis stacks

	ALDAS-α	ALDAS-Mini	ALDAS-E
Positioning	R&D / Cell evaluation	Pilot / Stack	Industrial / MW-scale
Typical Use Case	Single cells, small test setups (Universities, research institutes, R&D labs)	Cell scale up, small stacks, demonstration systems (System developers, pilot projects, system integrators)	Large electrolyzers, industrial plants (Hydrogen producers, industrial operators)
Main Benefit	Fast R&D and material evaluation	Parallel stack diagnostics and scaling	Full system monitoring and optimization

ALDAS-α

ALDAS-α: High-Speed EIS System for Real-Time Impedance Analysis

The ALDAS-α is a high-performance electrochemical impedance spectroscopy (EIS) system designed for analyzing fuel cells and water electrolysis. While conventional current-voltage (I-V) measurements are widely used to evaluate overall cell performance, they are limited in identifying the underlying causes of performance changes or degradation. Using EIS, the ALDAS-α enables a deeper analysis by quantitatively evaluating and separating complex electrochemical phenomena within the cell. This provides a more detailed understanding of internal processes. Thanks to its high-precision current sensing technology, the system delivers stable and accurate impedance data from very low frequencies, ensuring reliable and easy-to-interpret results. A key benefit of the ALDAS-α system is its fast measurement speed, completing scans in less than 8 minutes [OW2.1]- significantly reducing test time compared to conventional systems. With support for simultaneous multi-channel measurements up to 8 cells and up to 20 A DC output, the ALDAS-α system reduces development time considerably. The ALDAS-α is the ideal choice for high-speed, multi-channel EIS measurements in R&D environments where precision and efficiency matter most. It is one of HIOKI’s EIS measurement solutions, alongside the compact ALDAS-Mini and the high-power ALDAS-E.Technical Specifications Electrochemical impedance spectroscopy (EIS) for fuel cells and water electrolysisVoltage measurement range: 60 mV to 20 V Frequency range: high to low frequency sweep (e.g. 10 kHz to 100 kHz) Measurement speed: approx. 7.6 minutes (multi-channel, fast mode) Multi-channel capability: up to 8 cells simultaneously DC output: up to 20 A without external DC power supply

ALDAS-Mini

ALDAS-Mini – Compact EIS Analyzer for Electrolysis Cell Development

The ALDAS-Mini is a compact, high-performance electrolysis cell analyzer designed to accelerate R&D in hydrogen production technologies. Using advanced electrochemical impedance spectroscopy (EIS), it provides deep insights into the internal behavior of electrolysis cells, enabling engineers to optimize efficiency, reduce energy losses, and improve the performance of electrolysis cells and stacks. The cell analyzer can be connected to existing test setups without modifications to the existing electrolysis system, making it ideal for flexible usage in both laboratory and industrial environments. ALDAS-Mini supports a wide range of electrolysis technologies - including PEM, SOEC, AEM, and alkaline systems, which ensures compatibility across different development platforms. A key differentiator is its ability to perform impedance measurements under real high-current operating conditions, handling electrolysis currents from a few amperes up to 2000 A. Combined with simultaneous multi-cell measurement up to 8 cells, ALDAS-Mini enables efficient comparative analysis within cell stacks, significantly improving testing throughput and enabling faster identification of performance differences and degradation effects. With high noise immunity and precise current sensing, the ALDAS-Mini delivers stable and reliable measurement results - even in demanding environments. This makes it - making it a powerful tool for advancing next-generation hydrogen technologies. The ALDAS-Mini complements the ALDAS lineup as a compact solution alongside the high-speed ALDAS-α and the high-power ALDAS-E. Technical Specifications Electrochemical impedance spectroscopy (EIS) for electrolysis cells and stacksStack voltage range: up to 60 VElectrolysis current range: up to 2000 AMulti-channel measurement: up to 8 cells simultaneously Compatible with PEM, SOEC, AEM, AWE technologies High noise immunity for stable measurements

ALDAS-E

ALDAS-E – EIS Measurement System for kW to MW-Class Electrolysis and Fuel Cell Stacks

The ALDAS-E is a high-performance electrochemical impedance spectroscopy (EIS) system designed for in-operation analysis of large-scale electrolysis and fuel cell stacks. It enables precise impedance measurement under real operating conditions, enabling engineers to evaluate performance, identify losses, and monitor degradation in kW to MW-class-fuel cell and electrolysis systems. A key strength of the system is its ability to handle very high currents. By combining multiple current sensors, ALDAS-E supports measurements up to 10 kA, while still detecting small AC signals within noisy DC environments, which is critical for realistic stack evaluation. The ALDAS-E system offers scalable multi-channel measurement up to 48 channels, enabling simultaneous observation of both total stack behavior and individual cell performance. This makes it ideal for detailed stack diagnostics, comparative analysis, and electrolysis and fuel cell stack optimization. Despite the complexity of large-scale systems, ALDAS-E is designed for easy integration, connecting to existing setups without requiring dedicated power supplies or system modifications. The fast EIS measurement below 8 minutes and its high stability down to low frequencies, ALDAS-E significantly reduces evaluation time while maintaining high accuracy.ALDAS-E represents the high-end solution for applications that go beyond the scope of the high-speed ALDAS-α and the compact ALDAS-Mini. Technical SpecificationsMeasurement targets: electrolysis cells, fuel cells stacks, MW-electrolyzersFrequency range: 10 mHz to 100 kHz Measurement current: up to 10 kA (with combined sensors) Multi-channel capability: 1 to 48 channels Measurement voltage: 1.5 V to 1000 V