Stanford Research QCM200
The Stanford Research Systems QCM200 Quartz Crystal Microbalance is a powerful tool for measuring mass changes at the nanogram level. It is ideal for thin film deposition monitoring, corrosion studies, and biosensing applications.
- Model
- Stanford Research Systems QCM200
- Calibration
- Available on request
- Price
- $750
- Status
- In stock
- RFQ ref
- QCM200
This unit
The Stanford Research Systems QCM200 is a standalone quartz crystal microbalance instrument that measures mass deposition and viscoelastic properties with nanogram sensitivity and sub-monolayer detection capability. Operating at 5 MHz with an AT-cut, 1-inch diameter plano-plano crystal, the QCM200 directly correlates resonant frequency shifts to surface mass changes while simultaneously monitoring crystal resistance to characterize film and liquid viscoelasticity. The instrument handles highly viscous media up to 88% glycerol concentration, making it suitable for both air and liquid-phase measurements.
Technical Specifications
- Quartz Crystal: 5 MHz AT-cut, 1-inch plano-plano, standard Cr/Au electrodes with optional Ti/Au, Ti/Pt, or In Sn oxide configurations
- Frequency Counter: Integrated, user-selectable gate times (0.1 s, 1 s, 10 s) with display resolution of 1.0 Hz, 0.1 Hz, and 0.01 Hz respectively
- Timebase Stability: <4 × 10⁻⁹ Allan Variance (typical); Accuracy: ±1.5 ppm
- Resistance Meter: 0 to 5000 Ω range with resolution of 0.001 Ω (R < 100 Ω), 0.01 Ω (100–1000 Ω), and 0.1 Ω (1000–5000 Ω)
- Frequency Output: 5 MHz TTL square wave, 50 Ω source impedance
- Δf Analog Output: ±10 V full scale, 20-bit resolution; selectable ranges from ±200 kHz to ±2 kHz; 1 kΩ source impedance
- Conductance Output: Log-scale voltage output (0 to 10.625 VDC) correlating to resistance
- External Timebase Input: 10 MHz, 1 Vpp nominal, 1 kΩ input impedance for phase-locking to external precision references
- Capacitance Cancellation: Integrated shunt-capacitance cancellation circuitry
- Crystal Isolation: Transformer-isolated crystal for EQCM compatibility
Key Features
- Dual integrated measurement system: frequency and resistance simultaneously
- Front-panel or RS-232 control via Windows/Mac software for real-time acquisition and analysis
- Potentiostat integration through analog outputs for electrochemical applications
- Supports nanogram to microgram mass detection ranges
Typical Applications
- Electrochemical quartz crystal microbalance (EQCM) studies
- Thin-film characterization and viscoelastic analysis
- Molecular-level gravimetric sensing
- Lossy film and high-viscosity media measurements
Compatibility & Integration Analog outputs interface directly with potentiostats. External 10 MHz precision timebase input enables enhanced frequency stability for long-term measurements.
Specifications
| Parameter | Value |
|---|---|
| Frequency Range | 5 MHz core frequency |
| external timebase input 10 MHz | Voltage / Current Range | 20-bit resolution |
| External timebase input | 1 V peak-to-peak nominal, Analog output (Δf): 0 to ±10 VDC |
Stanford Research Systems QCM200 — Repair & Calibration Service
Aumictech offers NIST-traceable calibration and repair for the Stanford Research Systems QCM200. Calibration covers calibration scope varies by instrument type: vacuum gauges are verified at multiple pressure points against NIST-traceable pressure standards; spectrophotometers at wavelength accuracy and photometric accuracy points; strain gauge indicators at bridge excitation accuracy and full-scale output accuracy; pH meters against certified buffer solutions at pH 4, 7, and 10.. All calibrations ship with a NIST-traceable certificate. Turnaround is typically 1–3 business days after receipt.
Common Stanford Research Systems QCM200 faults: vacuum gauge filament failure (ionization gauges), spectrophotometer D2 lamp end-of-life, wavelength motor failure, strain indicator front-panel binding post corrosion, pH electrode conditioning failure. Most specialty laboratory instruments fail at their electromechanical interfaces first — vacuum gauge connectors and filament assemblies, spectrophotometer lamp housings and motor drives, strain indicator binding post corrosion. Component-level repair is standard; manufacturer support for legacy instruments is often limited, making third-party bench repair the practical path.
Stanford Research Systems QCM200 price
This Stanford Research Systems QCM200 is listed at $750. Calibration is available separately from $450. Contact us for volume pricing or if you need multiple units.
Stanford Research Systems QCM200 calibration cost
NIST-traceable calibration for the Stanford Research Systems QCM200 is $450 (standard — pass/fail certificate and calibration sticker) or $650 (full measured data at every test point, reference standards documented, traceability chain included). Calibration for this instrument covers calibration scope varies by instrument type: vacuum gauges are verified at multiple pressure points against NIST-traceable pressure standards; spectrophotometers at wavelength accuracy and photometric accuracy points; strain gauge indicators at bridge excitation accuracy and full-scale output accuracy; pH meters against certified buffer solutions at pH 4, 7, and 10.. Turnaround is 1 to 3 business days after receipt. See full calibration details →
