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QCM200 Quartz Crystal Microbalances

QCM200 Quartz Crystal Microbalances
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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

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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...

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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...

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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...

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