Registration is open for The Penn State University’s 24th Annual Corrosion Short Course scheduled for June 7-12, 2020 at the University Park Campus in State College, PA (USA). Gamry Instruments will be a co-sponsor for the course. Philadelphia, PA, January 27, 2020 – Registration is now open for the annual Penn State University Corrosion Short Read more about Gamry Instruments to Co-Sponsor the 24th Annual Penn State University Corrosion Short Course[…]
Gamry Instruments will be attending the Battery Industry’s most anticipated event – the PlugVolt Battery Seminar on July 21-23 in Plymouth, MI (USA) Philadelphia, PA, January 16, 2020 – Gamry Instruments will be attending the PlugVolt annual Battery Seminar from July 21st thru July 23rd, 2020. The seminar is being held at The Inn at Read more about The PlugVolt Battery Seminar is Scheduled for July 21-23, 2020[…]
Gamry Instruments has taken one of their most popular Application Notes, The Basics of Electrochemical Impedance Spectroscopy, and revised it into a new easy-to-read resource for researchers, academics and professionals. This newly designed reference guide is a primer on EIS and includes descriptions, formulas, and data presentations to get you started on building your knowledge Read more about Basics of Electrochemical Impedance Spectroscopy[…]
Warminster, Pa — Gamry Instruments, a leader in electrochemical impedance spectroscopy instrumentation, is proud to announce the launch of a new website designed to help researchers and academia find the right instrumentation for every application. The new website features a potentiostat selection tool, a first in the industry. This groundbreaking interface allows visitors to enter Read more about Gamry Instruments Launches New Website[…]
According to a new report released by the American Road & Transportation Builders Association (ARTBA), 58,495 of the 609,539 bridges in America have been found to be ‘structurally deficient”. This key finding is based on the ARBTA analysis of the U.S. Department of Transportation’s recently-released 2015 “National Bridge Inventory” database. According to the ARBTA Report Read more about Nearly 10% of US Bridges Considered Structurally Deficient[…]
Gamry Instruments will be an exhibitor at The International Society of Electrochemistry Meeting in Lausanne, Switzerland Gamry Instruments is proud to be an exhibitor at the 65th Annual Meeting of the International Society of Electrochemistry entitled Ubiquitous Electrochemistry Philadelphia, PA, Aug. 20, 2014 Gamry Instruments, designer and manufacturer of electrochemical instruments, will be an exhibitor Read more about Gamry Instruments to Attend 65th Annual ISE Meeting[…]
What’s important in the selection of a potentiostat? That depends greatly on its intended use. This page addresses an often misunderstood term.
Compliance voltage is the voltage available at the counter electrode that can be used to force current to flow and still maintain control of the working electrode voltage. The compliance should be specified in conjunction with a current value: “20V @ 250mA” or “20V @ full rated current”. An amplifier’s output voltage decreases at higher currents due to the output impedance of the amplifier.
A while ago I received an email from an electrochemist who lamented:
“We have some problems with the 173, which we still prefer to use occasionally because of its analog nature. … (The) potentiostat goes into oscillations.”
Although the M173 has a reputation for ‘stability’ it has always had problems with oscillation! These problems tend to be most troublesome when the more sensitive current ranges are used and when the cell capacitance is large. PAR had a ‘noise filter’ in their catalog for a long time that was really a ‘stability aid’ more than a ‘noise filter.’ It consisted of a capacitor that was placed between the counter electrode lead and the input jack of the M178 electrometer. This acts as a shunt for the higher frequency, oscillation-producing signals. A capacitor value of 0.01 µF is a good place to start. I think this stands the best chance of stabilizing your system.