Quartz Crystal Microbalance QCM200 — 5 MHz quartz crystal microbalance Quartz Crystal Microbalance · Measures frequency and resistance · Analog output for potentiostats · Reads highly loaded crystals (up to 5 kΩ) · Transformer-isolated crystal · Simple shunt-capacitance cancellation · External 10 MHz input · Windows/Mac software The QCM200 Quartz Crystal Microbalance measures mass and viscosity in processes occurring at or near surfaces, or within thin films. This system include a controller, crystal oscillator electronics, crystal holder, three quartz crystals, and Windows/Mac software. The instrument read the resonant frequency and resistance of a 5 MHz, AT-cut quartz crystal. The resonant frequency changes as a linear function of the mass of material deposited on the crystal surface. The resistance at resonance changes with the viscosity / elasticity of the material (film or liquid) in contact with the crystal surface. As a gravimetric instrument, the QCM200 can measure mass ranging from micrograms to fractions of a nanogram. Detection limits correspond to submonolayers of atoms. Observations of conformational changes, such as phase transitions, swelling, and cross-linking, can easily be made. Specifically designed to handle heavy loads (up to 5 kΩ), the instrument will maintain oscillation in aqueous solutions containing over 88 % glycerol (w/w %). It is ideal for studies involving lossy films and highly viscous liquids. QCM200 · QCM200 ... $2795 (U.S. list) The QCM200 is a stand-alone instrument with a built-in frequency counter and resistance meter. Series resonance frequency and resistance are measured and displayed, and there is an analog output proportional to frequency which can Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com

QCM200 Quartz Crystal Microbalance be used to interface with a potentiostat. The QCM200 can be operated from the front panel or a PC using the RS-232 interface. Windows and Macintosh software is provided for real-time data acquisition, display, analysis and storage. Both frequency and resistance trends can be viewed. User-tags are provided to time-stamp important events. The stability and accuracy of the QCM200 are ideal for most experiments. For special applications requiring optimum long-term frequency stability, a precision timebase, such as the FS725 Rubidium Frequency Standard, can be connected...

QCM200 Quartz Crystal Microbalance The quartz crystal microbalance is an essential addition to any biological laboratory. The data from a QCM perfectly complements that obtained from other techniques, such as surface plasmon resonance (SPR) and atomic force microscopy (AFM), aiding in the analysis of complex biological interactions. A Windows/Mac software program is included to facilitate remote operation and simplify data acquisition. Sorption sensors Moisture analyzers Particulate monitors Contamination monitors Electrovalency measurements Hydrogen absorption on metal films Bubble formation...

Frequency Measurement Display resolution Gate time Analog output Frequency output Source impedance Resistance Measurement Resistance display Voltage level 0 to 10.625 VDC, log scale Capacitance Cancellation Quartz Crystals (polished) Analog connectors Crystal holder Dimensions, weight Cr/Au (Ti/Au, Ti/Pt, In Sn oxide opt.) Holder: Kynar®, O-ring: Viton® Warranty One year parts and labor on defects Ordering Information QCM200 Controller, oscillator, 3 crystals, $2795 O100FC Axial flow cell $295 O100RXO Replacement oscillator electronics $395 O100RH Replacement crystal holder $395 O100CCB Crystal...