Gel Doc™ XR+ System


The Gel Doc XR+ system is based on CCD high-resolution, high-sensitivity detection technology and modular options to accommodate a wide range of samples and support multiple detection methods including fluorescence and colorimetric detection. The system is controlled by Image Lab™ software to optimize imager performance for fast, integrated, and automated image capture and analysis of various samples.

The system accommodates a wide array of samples, from large handcast polyacrylamide gels to small ReadyAgarose™ gels and various blots. The system is an ideal accompaniment to PCR, purification, and electrophoresis systems, enabling image analysis and documentation of restriction digests, amplified nucleic acids, genetic fingerprinting, RFLPs, and protein purification and characterization.

Key benefits include:

  • Gel and blot imaging and analysis are quick and accurate
  • Automated, hands-off routines; no training is required
  • Save and recall all the steps in the workflow for repeatable and reproducible results
  • Optimize the system at setup for image data that is always accurate, reproducible, and free of imaging artifacts
  • Wide range of applications with special accessories to preserve sample integrity for downstream research while ensuring user safety
  • Comprehensive, automated quantitative analysis of protein and DNA samples in seconds
  • Customize and organize data in reports
  • Obtain publication-quality results quickly

The Gel Doc XR+ system optimizes reproducibility and reliability of experimental data, enabling quantitative comparisons between different experiments. Using proprietary algorithms, this imaging system is calibrated at setup to ensure:

  • Images are in focus at all times, regardless of zoom level or sample position
  • Appropriate flat fielding correction is automatically and consistently applied to image data for every application
  • Imaging artifacts are automatically corrected

The Gel Doc XR+ system enables quick and easy visualization, documentation, and analysis of nucleic acid and protein gels, blots, and macroarrays with a few clicks of the mouse. The system supports fluorescence and colorimetric detection methods. The Gel Doc XR+ system consists of a darkroom hood, CCD camera and software-controlled motorized lens, UV and white light illuminators, filter slider with standard filter, and UV-protection shield. The system enables you to:

  • Increase cloning efficiency and protein production by protecting DNA electrophoresis samples from UV exposure using the XcitaBlue™ conversion screen and blue light excitable stains such as GelGreen, SYBR® Safe, and SYBR® Green I
  • Maintain standard operating procedures or criteria for sample performance as there is no loss in sensitivity compared to UV and ethidium bromide staining

The Gel Doc XR+ system can be upgraded to the ChemiDoc XRS+ system.

Chemiluminescence No
Fluorescence* Yes
Colorimetry/densitometry Yes
Gel documentation Yes
Hardware Specifications  
Maximum sample size 28 x 36 cm
Maximum image area 19.4 x 26 cm
Excitation source Epi-white light and trans-UV (302 nm) are standard (optional 365 nm lamp available); optional trans-white conversion screen and XcitaBlue™ UV/blue conversion screen available
Illumination control 3 modes (trans-UV, trans white, epi-white)
Detector CCD
Image resolution 4 megapixels
Pixel size (H x V) 4.65 x 4.65 µm
Filter holder 3 positions (2 for filters, 1 without filter)
Emission filters 1 included (standard), 3 optional
Dynamic range >3.0 orders of magnitude
Pixel density (gray levels) 4,096
Dynamic flat fielding Application specific, for all applications
Instrument size (L x W x H) 36 x 60 x 96 cm
Instrument weight 32 kg
Operating Ranges  
Operating voltage 110/115/230 V AC nominal
Operating temperature 10–28°C (21°C recommended)
Operating humidity <70% noncondensing
Automation Capabilities  
Workflow automated selection Application driven; user selected or recalled by a protocol
Workflow automated execution Controlled by a protocol via application specific setup for image area, illumination source, filter, analysis, and reporting
Workflow reproducibility 100% repeatability via recallable protocols; from image capture to quantitative analysis and reports
Autofocus (patent pending) Precalibrated focus for any zoom setting or sample height
Image flat fielding** Dynamic; precalibrated and optimized per application
Autoexposure 2 user-defined modes (intense or faint bands)
*Use the optional XcitaBlue kit if performing SYBR® Safe DNA applications, because the UV to blue conversion screen allows you to visualize DNA samples while protecting against UV damage.

**U. S. patent 5,951,838.
Gel Doc™ XR+ System with Image Lab™ Software #170-8195
Molecular Imager® Gel Doc™ XR+ System with Image Lab™ Software

Gel imaging system, includes darkroom, UV transilluminator, epi-white illumination, camera, cables, Image Lab software compatible with Windows or Mac OS

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Number Description Options
6427 Bio-Rad V3 Western Workflow, Rev B Click to download [ Add to Cart (Free) ]
10040758 Instruction Manual, Image Lab Software: Imaging Stain-Free Gels and Blots, Rev B Click to download
6434 Western Blot Normalization Using Image Lab™ Software Quick Start Guide Click to download
10016116 Gel Alignment Template Kit Click to download
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5989 Imaging Fluorescently Stained Gels with Image Lab Software Quick Start Guide, Rev A Click to download
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MI1708124 Instruction Manual, White Light Transilluminator, Rev A Click to download
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