Agilent SureScan Microarray Scanner
| Brand | Agilent Technologies |
|---|---|
| Origin | Singapore |
| Manufacturer | Agilent Technologies |
| Country of Origin | Imported |
| Model | SureScan |
| Instrument Type | Microarray Scanning System |
| Dimensions | 43 cm (W) × 67 cm (D) × 42 cm (H) |
| Laser Wavelengths | 532 nm, 640 nm |
| Laser Class | Class 1 |
| Scan Resolutions | 2 µm, 3 µm, 5 µm, 10 µm |
| Pixel Positional Accuracy | <1 µm (at 5 µm resolution) |
| Compatible Dyes | Alexa 555, Alexa 647, Alexa 660, Cy3, Cy5 |
| Slide Format | Standard 1" × 3" (25 mm × 75 mm) glass slides, thickness 0.9–1.1 mm |
| Uniformity | ≤5% CV (global), ~1% (local, 100 µm features) |
| Detection Limit | 0.01 chromophore per µm² |
| Autofocus | Yes |
| Integrated Barcode Reader | Codabar, Code 128 (A/B/C), Code 39, Code 93 |
| Operating Temperature | 15–30 °C |
| Relative Humidity | 15–85% RH |
| Max Altitude | 3000 m |
| Data Acquisition Time | 16 min (3 µm scan, 61 mm × 21.6 mm area), 24 min (2 µm scan) |
| Power Supply | 100–240 VAC, 50–60 Hz |
| Compliance | ISO 13485-manufactured |
| Intended Use | For Research Use Only (RUO), Not for Diagnostic Use |
Overview
The Agilent SureScan Microarray Scanner is a high-precision, laser-induced fluorescence (LIF) imaging system engineered for quantitative analysis of nucleic acid microarrays printed on standard 25 mm × 75 mm microscope slides. It operates on the principle of dual-laser excitation—using discrete 532 nm and 640 nm solid-state lasers—to simultaneously detect two spectrally distinct fluorophores (e.g., Cy3 and Cy5) co-hybridized to complementary DNA or RNA targets. This enables robust two-color comparative genomic hybridization (CGH), gene expression profiling, and methylation analysis with high signal-to-noise ratio and low cross-talk. The scanner employs galvanometer-based optical scanning with precision motorized stage positioning and real-time autofocus correction to ensure consistent focus across variable slide topography. All optical components—including dichroic mirrors, emission filters, and photomultiplier tube (PMT) detectors—are calibrated and aligned during factory assembly to maintain inter-instrument reproducibility. Designed and manufactured under ISO 13485 quality management systems, the SureScan platform meets stringent requirements for traceability, documentation, and process control in regulated research environments.
Key Features
- Dual-wavelength laser excitation (532 nm and 640 nm) with independent PMT gain control for balanced two-channel quantification
- Configurable scan resolutions: 2 µm, 3 µm, 5 µm, and 10 µm—optimized for feature sizes ranging from oligonucleotide probes (25–60 mer) to long oligo or cDNA arrays
- Automated slide handling with 24-slide capacity cassette, enabling unattended batch scanning without manual intervention
- Real-time autofocus system compensates for slide warpage, coverslip variation, or thermal drift during extended acquisition
- Integrated barcode reader supporting Codabar, Code 128 (A/B/C), Code 39, and Code 93 formats for LIMS-compatible sample tracking
- Ozone-scavenging subsystem minimizes photooxidative dye degradation during prolonged exposure, preserving signal integrity over time
- Native compatibility with Agilent Feature Extraction software—raw image files (.tif) are automatically imported and processed using standardized gridding, background subtraction, and normalization algorithms
Sample Compatibility & Compliance
The SureScan system accepts standard 1″ × 3″ (25 mm × 75 mm) glass microarray slides with thicknesses between 0.9 mm and 1.1 mm. It supports all Agilent-designed microarray formats—including SurePrint G3, One-Color, Two-Color, and custom-printed arrays—as well as third-party slides validated for use with Agilent hybridization protocols. Fluorophore compatibility includes Cy3, Cy5, Alexa 555, Alexa 647, and Alexa 660, with spectral response profiles optimized for minimal bleed-through and maximal dynamic range (>4 orders of magnitude). The instrument is manufactured in accordance with ISO 13485:2016 and complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity). While not cleared for clinical diagnostics, its design controls and validation documentation support GLP-compliant workflows and audit readiness for academic, pharmaceutical, and contract research organizations.
Software & Data Management
Raw image acquisition is managed via Agilent ScanControl software, which provides full parameter control—including laser power, PMT voltage, pixel dwell time, and scan region definition—with audit-trail logging enabled by default. Output TIFF files conform to MIAME-compliant metadata standards and include embedded EXIF tags specifying resolution, wavelength, gain, and date/time stamp. Integration with Agilent Feature Extraction v12.x or later enables automated grid alignment, foreground/background intensity extraction, and statistical flagging of low-quality features. Export options include tab-delimited text, GeneSpring GX-compatible .gpr, and normalized log₂ ratio matrices suitable for downstream R/Bioconductor analysis. All data transfers adhere to secure file-handling protocols; no cloud upload or external telemetry occurs unless explicitly configured by the user.
Applications
The SureScan platform serves as the imaging backbone for multiple high-content genomics applications: genome-wide gene expression profiling in model organisms and human tissues; array CGH for copy number variation (CNV) detection in cancer and developmental disorders; miRNA expression screening using locked nucleic acid (LNA)-enhanced probes; ChIP-on-chip and DNA methylation analysis via MeDIP-chip or MethylCap-chip workflows; and custom biomarker validation panels in translational research. Its quantitative fidelity supports longitudinal studies requiring cross-platform comparability, and its throughput capability (up to 24 slides per run) facilitates large-cohort studies in biobanking and population genomics initiatives.
FAQ
Is the SureScan scanner compatible with non-Agilent microarray slides?
Yes—provided the slide dimensions, surface chemistry, and fluorophore set match Agilent’s validated specifications. Users must verify hybridization efficiency and signal linearity independently.
Does the system support FDA 21 CFR Part 11 compliance?
While the hardware and ScanControl software do not ship with out-of-the-box Part 11 features (e.g., electronic signatures), they are designed to integrate with validated LIMS or ELN platforms that provide required audit trails, role-based access, and electronic signature capabilities.
What maintenance is required for long-term performance stability?
Annual calibration verification using Agilent’s Traceable Calibration Slide (G4401A) is recommended. Optical path cleaning and PMT gain recalibration should be performed every 6 months in high-throughput labs.
Can scan parameters be scripted or batch-processed?
Yes—ScanControl supports command-line interface (CLI) mode and XML-based protocol templates, enabling integration into automated pipelines via Python or LabVIEW.
Is ozone protection active during all scan modes?
Yes—the ozone scavenging subsystem operates continuously during laser illumination, regardless of resolution or scan speed setting, ensuring consistent photostability across all acquisition conditions.
