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Energy storage and conversion - BioLogic
home chevron_right Topicschevron_rightEnergy storage and conversion
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ENERGY STORAGE AND CONVERSION.

ENERGY STORAGE AND CONVERSION



Get the most out of your battery cycler, scanning probe workstation, or
potentiostat – galvanostat.

Browse this section of the site to find scientific articles, tutorials, videos,
and other self-help documentation relating to energy storage and conversion.

Please note that this database will be regularly updated with new documents, so
check back regularly.



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Battery Fuel cell & electrolyser PV RFB Supercapacitors
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TOPICS (109)

WHAT IS COMPLIANCE

Learn how a potentiostat controls the cell voltage and how to deal with
compliance voltage
More info

HOW TO USE XRD FOR IN OPERANDO BATTERY ANALYSIS

X-ray diffraction is used to study degradation mechanisms and performance
limitations of battery cells, providing valuable insights
More info

EC-LAB® SOLUTIONS FOR COUPLING WITH EXTERNAL DEVICES

This article shows how to integrate, synchronize, and interface BioLogic
potentiostats with other devices and instruments using EC-Lab.
More info

SUSTAINABLE BATTERIES: RECYCLING AND 2ND LIFE

This article describes the characterization and utility of batteries after their
first life.
More info

WHAT IS CO2 ELECTROLYSIS?

This article introduces CO2 electrolysis and explains CO2 reduction reactions,
products from CO2RR and discusses current challenges and prospects.
More info

GET THE BEST EIS MEASUREMENTS, EVEN WITH LONGER CABLES

As an industry leader in Electrochemical Impedance Spectroscopy, BioLogic
ensures accurate EIS measurements, regardless of cable length, by compensating
for parasitic effect with factory-calibrated cables. Focus on your research, not
your setup.
More info

ZFIT: HOW THE SENSITIVITY FACTOR CAN HELP OPTIMIZE THE EQUIVALENT CIRCUIT

Sensitivity functions can help you decide if a specific parameter is relevant or
not.
More info

WHY USE RDE AND RRDE METHOD TO CHARACTERIZE ELECTROCATALYSTS?

This article explains how BluRev can help you understand electrocatalyst
properties using RDE and RRDE methods
More info

INTRODUCING SYMMETRIC CELLS

Introduction to symmetric cells and their DC and AC electrochemical response.
More info

WHAT IS A BATTERY CYCLER?

What should I know about battery testing equipment?
More info

INTRODUCTION TO HIGH THROUGHPUT SCREENING

This article introduces high throughput screening and explains its advantages
compared to iterative testing.
More info

SDC OR SECM FOR HIGH THROUGHPUT SCANNING?

The article compares Scanning Electrochemical Microscopy (SECM) and Scanning
Droplet Cell (SDC) for high throughput workstation
More info

WHAT SCANNING PROBE ELECTROCHEMISTRY PLATFORM IS BEST FOR HIGH THROUGHPUT
SCREENING?

The article explains how to select the best high throughput workstation
More info

ELECTROCHEMICAL CHARACTERISATION OF FUEL CELLS AND ELECTROLYSERS

This article explains the electrochemical characterization of fuel cells and
electrolysers using DC and AC techniques.
More info

WHAT ARE PEM FUEL CELLS AND ELECTROLYZERS?

This article will explain the basic principles behind fuel cells / electrolyzers
and show how potentiostats are used to qualify fuel cell and electrolyzer
performance.
More info

THE GERISCHER IMPEDANCE

What exactly is the Gerischer impedance and which systems can be modelled with
it?
More info

M470: AN ALL IN ONE SCANNING PROBE ELECTROCHEMISTRY SOFTWARE

Everything you need for local electrochemistry in one software
More info

OPTIMIZE PACK AND STACK PERFORMANCE WITH SIMULTANEOUS MEASUREMENTS

This article explains how our instruments and software configurations can
measure both battery packs or fuel cell stacks and their individual cells
simultaneously.
More info

SAFETY & CONDITIONAL LIMITS: WHAT ARE THEY AND HOW ARE THEY USED?

Understand the differences and the interest of embedded limits in EC-Lab® and
BT-Lab®.
More info

MAKE LIFE EASIER WITH SMART LIMITS AND AUTOMATIC I RANGE

This article explains new tools available in EC-Lab® V11.50 including I Range in
Galvano mode and smart charge limits.
More info

HOW TO AUTOMATE EXPERIMENTS AND BUILD COMPLEX PROTOCOLS: AN INTRODUCTION TO THE
M470 SEQUENCER

Automating experiments, and writing complex protocols with the M470 sequencer.
More info

TAKE YOUR EXPERIMENTS ‘TO GO’ WITH EC-LAB®

Unlock the true potential of your electrochemical experiments with wireless
connectivity.
More info

WHICH SCAN-LAB SOFTWARE SHOULD I USE?

Information on when to use the different BioLogic software available for
scanning probe electrochemistry.
More info

EC-LAB®

The stand-out potentiostat interface that just keeps getting better
More info

ZFIT: HOW TO HAVE CONFIDENCE IN RESULTS USING STD ERR.?

This article explains the significance of the std err. parameter in ZFit, the
EIS fitting tool in EC-Lab.
More info

WHAT ARE ALL-SOLID-STATE BATTERIES

Discover key differences from traditional lithium-ion batteries, ongoing
research challenges, and instrumentation requirements
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART V – HOW TO CHOOSE THE PROPER EQUIVALENT
CIRCUIT?

This article gives tips, tricks and general guidance for choosing the proper
equivalent circuit.
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART VII – EQUIVALENT CIRCUITS IDENTIFIABILITY

Explain the identifiability and unidentifiability properties of equivalent
circuits
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART VI – EQUIVALENT CIRCUITS
DISTINGUISHABILITY

Explain the distinguishability properties of equivalent circuits
More info

SUPERCAPACITORS AND INSERTION BATTERIES: WHAT ARE THE DIFFERENCES?

This article describes the main differences between supercaps and batteries.
More info

ANODE VS CATHODE: WHAT’S THE DIFFERENCE?

This article clarifies the differences between anodes cathodes and positive and
negative electrodes in secondary batteries.
More info

WHAT IS A FREQUENCY RESPONSE ANALYZER (FRA)?

What is a Frequency Response Analyzer, what is its principle? This article
details key information about FRA.
More info

NERNST, POURBAIX AND SELF-DISCHARGE

Using the example of lead-acid batteries, the goal of this article is to provide
a better understanding of Nernst law, how it can be used to construct Pourbaix
diagrams, and how Pourbaix diagrams can in turn be used to explain
self-discharge.
More info

WHAT IS A POTENTIOSTAT AND ITS USE IN SCIENCE & INDUSTRY (ELECTROCHEMISTRY
BASICS SERIES)

What is a potentiostat? An article detailing every aspect of this versatile
electrochemical multitool. Covers Potentiostat functionality and operation, the
history of the potentiostat, uses and applications and the future of the
potentiostat
More info

BATTERY SCIENCE: INTERACTIVE GLOSSARY OF TERMS

What does this battery term mean? A comprehensive, interactive glossary of terms
used in battery science
More info

INTERNAL RESISTANCE SERIES. PART I: WHAT IS INTERNAL RESISTANCE IN A BATTERY?

What is internal resistance in a battery?
More info

INTERNAL RESISTANCE SERIES. PART II: HOW TO DETERMINE THE INTERNAL RESISTANCE OF
A BATTERY

This second in a series of 3 articles will help you to understand internal
resistance and how it can be measured.
More info

INTERNAL RESISTANCE SERIES. PART III: WHICH TECHNIQUES SHOULD I USE TO
INVESTIGATE THE INTERNAL RESISTANCE OF A BATTERY?

This article in BioLogic's Learning Center explains which techniques are
applicable for the investigation of internal resistance in batteries
More info

HOW DO I CHOOSE BETWEEN STEP MODE AND SWEEP MODE?

Choosing step mode or sweep mode affects experiment quality and duration from
Scanning Electrochemical Microscopy to Atomic Force Microscopy
More info

FUTURE PROOF YOUR POTENTIOSTAT WITH PREMIUM RANGE, SELF-INSTALL INTERNAL
BOOSTERS.

The article explains how users can easily upgrade their Premium range
potentiostat by installing boosters, thereby increasing the scope of the
instrument.
More info

FLEXP + WATER COOLING = MORE POWER (UP TO 800 A)!

How the FlexP boosters' unique design and proprietary technology faciliates
measurements for EVs and high-power applications
More info

SECM101: WHAT IS CONSTANT DISTANCE (CD)-SECM?

Constant Distance (CD)-SECM is introduced in this BioLogic Learning Center
article
More info

SCANNING PROBE ELECTROCHEMISTRY: A GLOSSARY OF TERMS

What do the different terms relating to local electrochemistry mean? This
article gives a definitive list
More info

ENSURING THE QUALITY OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY MEASUREMENTS ON
HIGH-POWER SYSTEMS

The quality of EIS measurements on high-power systems is presented in this
article.
More info

DISTRIBUTION OF RELAXATION TIMES (DRT): HOW TO IDENTIFY EQUIVALENT CIRCUITS
EFFICIENTLY

The Distribution of Relaxation Times (DRT) analysis (equivalent circuit
identification tool) is introduced.
More info

WHAT IS ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS)? ELECTROCHEMISTRY BASICS
SERIES

Electrochemical Impedance spectroscopy (EIS) is a powerful tool enabling the
study of processes that occur at the interface of the electrode.
More info

KEY FACTORS TO CONSIDER WHEN LOOKING FOR A SCANNING ELECTROCHEMICAL WORKSTATION.

Factors of interest when looking at a scanning electrochemical workstation are
discussed.
More info

SECM101: INTRODUCTION TO THE REDOX MEDIATOR

The Scanning Electrochemical Microscopy (SECM) redox mediator is introduced.
More info

SKP VS KPFM

Scanning Kelvin Probe and Kelvin Probe Force Microscopy are compared.
More info

WHAT IS THE DEFINITION OF THE IMPEDANCE Z?

How to correctly define the $Z$ impedance
More info

WHICH SCANNING PROBE ELECTROCHEMISTRY TECHNIQUE?

The scanning probe electrochemistry techniques on the M470 are compared.
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART IV – THE EFFECT OF HIGH FREQUENCY
INDUCTANCE.

High frequency inductance can strongly affect the shape of impedance graphs and
need to be accounted for during data fitting.
More info

ANATOMY OF AN SKP PROBE

The key features of an SKP probe will be discussed.
More info

SKP AND THE FRINGING EFFECT

The fringing effect and its role in Scanning Kelvin Probe (SKP) is introduced.
More info

CVSIM AS A LEARNING TOOL. II INTERFACIAL CONCENTRATIONS

CVSim is used to determine the peak current concentration of electroactive
species involved in a reversible redox reaction (E).
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART II – WHY CIRCLE FITTING IS WRONG?

We demonstrate why circle fitting should not be used to analyze impedance data
using ZSim- part of EC-Lab, BioLogic's potentiostat control/analysis software
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART III – HOW TO DETECT AN INDUCTIVE BEHAVIOUR
AT LOW FREQUENCIES

Does the Nyquist impedance diagram of the C1/R1/(R2+L2) circuit always have an
inductive arc at low frequencies?
More info

NOT NEGATIVE. NOT POSITIVE. NEGATIVE AND POSITIVE. FULL CELL CONTROL FOR PREMIUM
& ESSENTIAL INSTRUMENTS

The ability to fully understand the behavior of positive & negative electrodes
gives battery researchers a holistic view of battery performance.
More info

NEW WEBINAR (BIOLOGIC US): DOES MG2+ REVERSIBLY INTERCALATE INTO TRANSITION
METAL OXIDES? REGISTRATION & ABSTRACT

Details of the latest webinar in the Blue Box Webinar Series and registration
links
More info

INVESTIGATION OF STRUCTURE-ELECTROCHEMISTRY RELATIONSHIPS IN NOVEL SILICON
ANODES FOR LITHIUM-ION BATTERIES (WEBINAR)

Part two of the BioLogic USA Blue Box Webinar Series: Structure-Electrochemistry
Relationships in Novel Silicon Anodes for Lithium-ion Batteries
More info

MULTICHANNEL & SINGLE-CHANNEL POTENTIOSTATS – WHAT’S THE DIFFERENCE?
(ELECTROCHEMISTRY BASICS SERIES)

An overview of the differences between single channel and multichannel
potentiostat galvanostats
More info

LEIS OR AC-SECM?

Local Electrochemical Impedance Spectroscopy (LEIS) and Alternating
Current-Scanning Electrochemical Microscopy (ac-SECM) are compared.
More info

DON’T FORGET OUR YOUTUBE CHANNEL

Don't forget that a wide range of support, software tutorials and product
support videos are also available on our YouTube Channel
More info

ZSIM AND ZFIT AS LEARNING TOOLS. PART I – ACIDIC CORROSION

An overview of ZSim the powerful Electrochemical Impedance Spectroscopy (EIS)
simulation tool available in EC-Lab®,
More info

$\SMALL R_\TEXT P = \LIM \LIMITS_{F \RIGHTARROW 0} \TEXT{RE} \;Z$. WHY?

Why is the polarization resistance the finite low-frequency limit of the
impedance? This Learning Center article explains why...
More info

$\SMALL R_\TEXT P = \LIM \LIMITS_{F \RIGHTARROW 0} \TEXT{RE} \;Z$. WHY?

Why is the polarization resistance the finite low-frequency limit of the
impedance? This Learning Center article explains why...
More info

THE EASY WAY TO D – THE DIFFUSION COEFFICIENT

Performing EIS experiments on a Rotating Disk Electrode is a really easy way to
access the diffusion coefficient of the electroactive species in the considered
electrolyte.
More info

BATTERY STATES: STATE OF CHARGE (SOC), STATE OF HEALTH (SOH). ELECTROCHEMISTRY
BASICS SERIES.

Battery States (Charge and of Health) are defined and discussed in this article.
More info

SCANNING PROBE ELECTROCHEMISTRY FOR CATALYSIS RESEARCH

An overview of the benefits of local electrochemistry in research in the field
of catalysis
More info

INVESTIGATING BATTERY AGING USING DIFFERENTIAL CAPACITY ANALYSIS (DCA)

The importance of DCA for battery aging...
More info

HOW TO READ BATTERY CYCLING CURVES

An overview of how to read cycling curves and their relevance to battery
performance/behavior
More info

HOW TO CORRECT IMPEDANCE MEASUREMENTS WHEN USING LONGER CABLES OR A TEST FIXTURE
(ELECTROCHEMISTRY BASICS SERIES)

Focus on your Device under Test. How to remove parasitic impedance due to
extension cables or connection interfaces
More info

THE DIFFERENT CURRENT AND VOLTAGE SETPOINT OPTIONS IN EC/BT-LAB®

This article presents the various options available in EC/BT-Lab® for potential
and current setpoints.
More info

HOW TO AVOID SIDE REACTIONS DURING BATTERY CHARGING/DISCHARGING?

How can we avoid unwanted reactions at the electrodes during battery
charging/discharging?
More info

SCANNING PROBE ELECTROCHEMISTRY FOR SUSTAINABLE ENERGY RESEARCH

A short article and associated video relating to scanning probe electrochemistry
and sustainable energy
More info

HOW TO USE ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS) ACCURACY CONTOUR PLOTS

EIS accuracy contour plots must be used to interpret errors made during EIS
measurements and identify the best frequencies possible for a given impedance
range.
More info

EFFECT OF THE STAIRCASE ON CURRENT SAMPLING.

An article detailing the effect of the staircase on current sampling
More info

INVESTIGATION OF IMPEDANCE MEASUREMENTS USING THE Z SIM TOOL (ELECTROCHEMISTRY
BASICS SERIES)

To adjust the frequency range of your EIS experiment or just to see the shape of
your model, Z Sim is available on both EC-Lab® and BT-Lab® software.
More info

NYQUIST PLOTS: WHY USE THE ORTHONORMAL SCALE?

This article illustrates why the orthonormal scale should be used for Nyquist
impedance plots.
More info

DC-SECM AND THE SECM150

The dc-SECM technique. Includes a link to a more detailed, downloadable
document.
More info

100TH LEARNING CENTER PUBLISHED

How to get the best out of BioLogic's Learning Center
More info

HOW DO I CUSTOMIZE MY PLOTS?

A suitable plot with the right variables allows you directly access the results
and saves a great deal of time during the analysis. In this short article we
show you how...
More info

CREATE AND SAVE YOUR OWN PROTOCOLS

Learn how to save time by configuring full experiments from previous settings;
including safety limits, advanced settings, cell characteristics and external
device configuration.
More info

SPLIT ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS) EXPERIMENTS INTO MULTIPLE
SEQUENCES: SAVE TIME WITHOUT COMPROMISING QUALITY

Reliable impedance measurements require the system under study to remain linear
and stationary during the whole measurement sequence. This article describes the
ideal configuration for studying unstable systems such as batteries or supercaps
to save time while maintaining good measurement quality.
More info

WORK SMARTER, NOT HARDER: TECH-TIPS

A series of short articles explaining how to work more efficiently and
streamline your workflow
More info

CONNECTION TO THE CELL – PART 3 – PERMEATION CELL MEASUREMENTS (WORKING
ELECTRODE TO GROUND)

Last in a three part series about connection modes
More info

CONNECTION TO THE CELL – PART 2 – MULTI-ELECTRODE MEASUREMENT

The second in a third part series of three articles about connection modes.
More info

CONNECTION TO THE CELL – PART 1 – WHAT IS “GROUND”?

Different grounding options based on application type
More info

SCANNING PROBES & FUEL CELL RESEARCH

Scanning Probes & Fuel Cell Research: overview of techniques
More info

SECM TO FORM AND SCREEN MICRON SCALE ELECTROCATALYSTS

Article illustrating how SECM can be used for high throughput screening of novel
electrocatalytic materials destined for green energy sources
More info

EIS AND BATTERY SCREENING

Article describing how advanced EIS battery cyclers can play a multipurpose role
in battery screening.
More info

A BRIGHT IDEA: SCANNING KELVIN PROBE (SKP) FOR THE INVESTIGATION OF PHOTOVOLTAIC
SYSTEMS

Article covers the importance of accurately measuring the work function of
device components, in particular that of the electrodes. in relation to
photovoltaic technologies
More info

SCANNING PROBES & PHOTOVOLTAIC RESEARCH

Scanning probe electrochemistry has already been used to help answer a number of
questions relating to photovoltaics. This article will discuss the benefits of
scanning proble electrochemistry in relation to PV.
More info

SCANNING PROBE ELECTROCHEMISTRY FOR MATERIALS RESEARCH

Scanning probe electrochemistry for materials research
More info

WHY USE ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS) FOR BATTERY RESEARCH?

Understand which information you can accurately obtain from your insertion
material using Electrochemical Impedance Spectroscopy.
More info

GET MORE FROM YOUR POTENTIOSTAT. UNDERSTANDING BANDWIDTH & ITS EFFECT ON
MEASUREMENTS (ELECTROCHEMISTRY BASICS SERIES)

An article which gives an overview of the electronic system that sits behind a
potentiostat/galvanostats and describes how it can affect your measurements.
More info

HOW TO CHECK AND CORRECT THE TIME VARIANCE OF YOUR SYSTEM UNDER EIS MEASUREMENTS

The article gives details of the tools available in EC-Lab® to help you check
and correct the time variance of your system so it does not affect your EIS
measurements.
More info

HOW TO MAKE RELIABLE ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY MEASUREMENTS WITH
EIS QI™

To be considered reliable, EIS measurements must be performed on a system that
is linear, in a steady-state and time-invariant. Quality Indicators are made
available to users of EC-Lab® to ensure that the system fulfills these
requirements.
More info

SCANNING PROBE ELECTROCHEMISTRY & MATERIALS RESEARCH

The use of scanning probe electrochemistry in materials science
More info

SCANNING PROBE ELECTROCHEMISTRY & BATTERY RESEARCH

As demand for electric vehicles, portable electronics, and green energy storage
grow, so too will the demand for better batteries. To improve on current battery
technologies, researchers must intimately understand battery components
More info

PEIS OR GEIS OR GEIS-AA? THAT IS THE QUESTION.

This article explains when Electrochemical Impedance Spectroscopy (EIS) should
be performed under potentio control (PEIS), galvano control (GEIS) and when
GEIS-AA should be used.
More info

ZFIT (IMPEDANCE FITTING) TUTORIALS FOR POTENTIOSTATS AND BATTERY CYCLERS

Series of tutorials about ZFit, BioLogic's impedance fitting tool
More info

DATA OF INTEREST – WORK MORE EFFICIENTLY.

Get the most out of your potentiostat/battery cycler : how EC/BT-Lab can help
you work more efficiently as well as save valuable time.
More info

RESOLUTION, PRECISION, ACCURACY, TEMPERATURE STABILITY AND TIME BASE: THE FIVE
TO WATCH (ELECTROCHEMISTRY BASICS SERIES)

The five characteristics that should be on every electrochemist’s radar
More info

HPC: THE IMPORTANCE OF ULTRA-PRECISION BATTERY CYCLERS

As opposed to standard cycling techniques, High Precision Coulometry (HPC)
measurements can provide a reliable estimation of battery lifetime quickly
More info

NO NEED TO PLAN YOUR FUTURE ANALYSIS… GO STRAIGHT AHEAD

It is time to demystify a false truth. You really do not always need to add
points in the record settings of BT-Lab® and EC-Lab® in order to obtain highly
accurate measurements.
More info

MODIFY ON-THE-FLY: FLEXIBLE POTENTIOSTAT/BATTERY CYCLER CONTROL

No need to stop the experiment with EC-Lab®’s “modify-on-the-fly” functionality
More info

WHY 4-POINT MEASUREMENTS?

A potentiostat / galvanostat is an instrument that can control both the current
and the voltage imposed to a cell. For this purpose, Bio-Logic instruments
require at least 4 cables:
More info

POTENTIOSTATS: OBTAINING HIGH QUALITY MEASUREMENTS (ELECTROCHEMISTRY BASICS
SERIES)

This article gives some tips to improve the quality of measurements, from
optimizing the setup or the connection interfaces, to the geometry of the cell
itself.
More info
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BATTERY CYCLER

Discover our Battery cycler range, designed for all your needs.

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 * Products
 * BCS-900 Battery Cycler series
 * MPG-200 battery cycler series
 * BT-Lab® Software Suite
 * Battery Holders
 * Connection Accessories




POTENTIOSTATS / GALVANOSTATS / FRA

Discover our Potentiostat range, designed for all your needs.

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 * Products
 * Essential Potentiostats
 * Premium potentiostats
 * Frequency Response Analyzer (FRA)
 * Software


 * Add-ons
 * Electrode rotator
 * Temperature Control Unit
 * Spectro electrochemistry


 * Accessories
 * Battery Holders
 * Connection Accessories
 * Electrochemical Cells
 * Consumable
 * Energy Conversion
 * Material Testing
 * Scanning




SCANNING ELECTROCHEMISTRY WORKSTATION

Discover our scanning electrochemistry workstation ecosystem.

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 * Products
 * M470
 * Software
 * Scanning Accessories




RAPID KINETICS & SPECTROSCOPY

Discover our range, designed for all your needs.

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 * Products
 * Spectrometer
 * Stopped-flow /quench flow
 * Rapid solution changer