740 Membrane Test System
The 740 Membrane Test System (MTS) is a fully integrated platform for accurate, repeatable measurement of ionic conductivity and in-plane/through‑plane resistance in polymer electrolyte membranes.
Designed for controlled gas, humidity, temperature, and pressure environments, the 740 MTS provides researchers with clean transport data without full fuel cell assembly.
How It Fits in Your Workflow
The 740 MTS delivers high‑resolution membrane transport data that can inform downstream research and development, including:
- Fuel cell and electrolyzer materials optimization
- Ionomer formulation comparisons
- Durability and hydration studies
- Inputs into full MEA and stack testing
Pair the 740 MTS with Scribner test systems, potentiostats, and impedance tools for full material‑to‑device insight.
ADVANCED FEATURES
Engineered for precision and repeatability, the 740 Membrane Test System combines controlled environments, integrated measurement hardware, and software-driven automation to deliver clean, reliable conductivity and resistance data for polymer electrolyte membranes:
-
- Controlled temperature & humidity environments — Accurate dew point, relative humidity, and sample temperature control for data relevant to real electrochemical operation.
-
- Integrated gas handling & mixing — Wet/dry gas streams and N₂ purge capability for precise reactant environment control and safe operation.
-
- Four‑electrode conductivity measurement — In‑plane conductivity technique minimizes interfacial artifacts to isolate true membrane transport resistance.
-
- Software‑driven automation — CorrWare® software sequences tests, automates data capture, and integrates with standard impedance analysis tools.
-
- Repeatable & reliable sample setup — Spring‑loaded compression stack up to 400 PSI with quick, simple assembly for minimal sample prep.
-
- Safety & system protections — Cell lock feature and automatic shutdown with integrated N₂ purge on alarm conditions ensure secure, unattended testing.
How It Fits in Your Workflow
The 740 MTS delivers high‑resolution membrane transport data that can inform downstream research and development, including:
-
- Fuel cell and electrolyzer materials optimization
-
- Ionomer formulation comparisons
-
- Durability and hydration studies
-
- Inputs into full MEA and stack testing
Pair the 740 MTS with Scribner test systems, potentiostats, and impedance tools for full material‑to‑device insight.
Inside the System
SPECIFICATIONS
- Humidifier – 316L SS materical, designed for 100% gas saturation, auto water fill
- Mass Flow Control – Two; Wet and Dry, 0-500 sccm each (allows variable wet gas % and RH control)
- Sample Gas Selector – Selects N₂ or H₂/other
- Gas Pressure Switches – Two; N₂ or H₂/other
- Gas Dew Point Meter – One, capacitance-type sensor in sample chamber
- Measurable Dew Point – -20 to 120ºC
- Set and Report Accuracy – ±0.25% of span, ±1 least significant digit
- Set and Report Resolution – 0.1 ° C
- Sensor Type – Thermocouples, Type T
- Temperature (max) – 180 ° C (chamber, sample), 120 ° C (humidifier), 130 ° C (gas transfer line)
- Open/Close Mechanism – Threaded, screw-in cell head with integrated electrodes and locking-pin
- Electrode Clamp Mechanism – Mechanical, spring-loaded, integrated with cell head
- Electrodes – Platinum, proprietary four-terminal design (U.S. Patent No. 7,652,479)
- Temperature Range – Ambient to 180 ° C
- Pressure Range – Ambient to 30 PSIG (207 kPa)
- Post-Chamber Gas Flow Path – Heat exchanger, condensate collection tank, precision manual back pressure regulator, vent port
- Operating Temperature – 15 – 35 ºC
- Power Source – 100-120 VAC; 50/60 Hz – 220-204 VAC optional
- Size & Weight – 46 x 28 x 48 cm (18 x 11 x 19 in) excluding installed cell head
- Alarm Conditions
- Automatic Hardware Shutdown
Included with every Scribner is a set of parts and tools for installing the instrument. Specifically, each 740 includes;
Tools
2 wrenches, 1/2″ & 9/16″, for common fittings
Document Folder
USB drive with documentation and software
Calibration information
Cabling
Country specific power cords bringing wall power to unit
USB cable connecting Unit to Computer
Alarm accessory cable
Extra Parts
Swagelok Nuts & Ferrules
Vaisala insulation cap
INTerface & impedance measurement
Solartron Analytical 1260 FRA or Newtons4th PSM 1735+ IAI Interface or Ivium potentiostat recommended
MTS4 software works with CorrWare®, ZPlot®, MultiStat® ZPlot·Lab™ and direct control of Newtons4th FRA
PRODUCT DOCUMENTS
PRECISION IN THE DETAILS
Enhance your lab setup with accessories and cell fixtures designed for accuracy, repeatability, and ease of use. These add-ons ensure optimal performance, tailored configurations, and seamless integration with your core system—because every detail matters.
BT-112 Conductivity Cell
BT-115 Conductivity Cell
The BT-112 brings in-plane membrane conductivity measurement into your existing test system, using the hardware you already have to control temperature, humidity, gas type, and pressure around the sample. The four-electrode technique reports only ionic transport resistance — not contact resistance, not charge-transfer resistance — so the number you get is actually the membrane’s conductivity, not a composite artifact of how it was assembled. No separate environmental chamber needed.
The BT-115 is the BT-112 for use with ElectroChem hardware — same four-electrode in-plane conductivity measurement, same rigor, same ability to use your existing test system for environmental control instead of maintaining a separate chamber setup. Results are methodologically identical to BT-112 data, so cross-lab and literature comparisons hold.
customize your 740: accessories for smarter science
Optimize your test environment with modular accessories engineered for seamless integration with the 740 Membrane Test System. These tools support advanced diagnostics, automated workflows, and scalable configurations for high-performance fuel cell research.
YOUR PARTNER IN SCIENCE, FROM START TO BREAKTHROUGH
Turnkey Consumables & Integrations
Scribner sources essential consumables and compatible equipment—membranes, sensors, and more—to simplify and support your research workflow.
Professional Installation & Training
Our expert electrochemists provide on-site system setup, commissioning, and user training to ensure confident, efficient operation from day one.
Service, Repair & Calibration
From fast tech support to on-site calibration and factory repairs, Scribner keeps your system running smoothly with reliable service and stocked parts.
Ongoing Support & Warranty Protection
Stay current with software updates, application notes, and optional extended warranties for long-term peace of mind.
TRUSTED BY PUBLISHED RESEARCHERS WORLDWIDE
let’s power your next discovery together
Whether you’re evaluating a new system, troubleshooting in the lab, or exploring collaboration opportunities, our team is ready to help — wherever you are in the world. Fill out the form below and let’s talk innovation!