E-Gel Imager  

The Invitrogen™ E-Gel™ Imager is a compact, affordable, easy-to-use imaging system for stained gels and Invitrogen WesternDot™ 625 probe–stained western blots. Equipped with a high-resolution digital camera, the E-Gel system can be used to image gels incorporating fluorescent stains (e.g., ethidium bromide and Invitrogen™ SYBR™ stains) or colorimetric stains (Invitrogen™ Coomassie™ and silver stains). Additionally, you can image western blots detected with the WesternDot 625 detection kit reagents, avoiding the need for film processing. Setup is simple, and the system features intuitive software for band analysis.

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E-Gel Imager brochure

High-quality imaging from a variety of gel types

The E-Gel Imager is designed for the documentation and densitometric analysis of stained nucleic acids and proteins in agarose and polyacrylamide gels, including E-Gel® agarose gels and Invitrogen™ Novex™ NuPAGE™ acrylamide gels. In addition, the E-Gel Imager may be used to image western blots that have been probed with WesternDot 625 secondary antibodies.

Each E-Gel Imager includes a camera hood and your choice of interchangeable bases:

  1. Blue Light Base—ideal for DNA stains such as Invitrogen™ SYBR™ Safe stain and Invitrogen™ SYBR™ Green stain, as well as for E-Gel EX agarose gels
  2. UV Light Base—best for ethidium bromide–stained gels
  3. E-Gel Adaptor Base—use with the Invitrogen™ E-Gel Go!™ System or Invitrogen™ E-Gel™ iBase™/E-Gel™ Safe Imager System for real-time monitoring of gel progress

You may use either the Blue Light Base or the UV Light Base to image stained protein gels (including Invitrogen™ product line such as SimplyBlue™ Safe, SilverQuest™ Silver, SYPRO™ Ruby, and Coomassie™ blue stains) by using the E-Ge Imager White-Light Conversion Screen

Filter choice for optimum signal capture

Your choice of three interchangeable filters allows even greater flexibility to capture images from various stains—the orange “universal” filter; a green filter optimal for SYBR Green and SYBR Safe stains and for E-Gel EX agarose gels; and an optional red filter for higher resolution when using Invitrogen™ Molecular Probes™ Qdot™ 625 probes.

E-Gel Imager filters  

Every E-Gel Imager camera hood comes with a pre-installed orange (universal) filter. Users may remove the orange filter and replace with either a green or red filter, depending on the stain used.


Gel type


E-Gel Imager System with:

UV Light Base

Blue Light Base

E-Gel Adaptor Base

Nucleic acids Agarose ( incl . E-Gel gels) and polyacrylamide gels Ethidium bromide ✓✓✓✓    
SYBR stains1,2 ✓✓ ✓✓✓✓ ✓✓✓✓
Colorimetric stains3 ✓✓✓✓ ✓✓✓✓  
Proteins Polyacrylamide gels Colorimetric stains3 ✓✓✓✓ ✓✓✓✓  
Fluorescent stains4 ✓✓✓✓    
Western blots Qdot® detection5 ✓✓✓✓    
  1. SYBR stains (i.e., SYBR Green, SYBR Safe, and SYBR Gold stains) are excited most optimally with blue light. If using UV light to excite SYBR stains, the E-Gel Imager UV/SYBR Filter will also be required.
  2. E-Gel gels may be visualized on the UV Light Base (ethidium bromide, SYBR Safe, or SYBR Gold stained gels), Blue Light Base (SYBR Safe or SYBR Gold stained gels), or E-Gel Adaptor Base (SYBR Safe or SYBR Gold stained gels). If you’re using the E-Gel Adaptor Base, an E-Gel iBase and an E-Gel Safe Imager (or combo kit of those items) will also be required.
  3. The E-Gel Imager White-Light Conversion Screen is required for viewing DNA gels stained with SilverQuest Silver Stain for DNA, and protein gels stained with SimplyBlue Safe Stain, SilverQuest Silver Stain, and Coomassie Blue Stain.
  4. Protein gels with stains such as SYPRO® Ruby may be visualized on the E-Gel Imager System with the UV Light Base.
  5. For higher-resolution imaging results, the E-Gel Imager Qdot 625 Filter may be used for imaging western blots probed with Qdot probes, such as WesternDot 625 secondary antibodies with Invitrogen™ VIVID™ technology.

E-Gel Imager Software

The Invitrogen™ product line such as GelQuant™ Express Analysis Software and GelCapture™ Acquisition Software applications integrate seamlessly with the E-Gel Imager System to provide you with all the applications, functions, and tools for analyzing captured images and data, including densitometric analysis (based on a standard). Both software applications are included with each E-Gel Imager System.

Excellent detection of target proteins with WesternDot® 625 secondary antibodies

The E-Gel® Imager (with either the orange or red filter) can image WesternDot® secondary antibody–probed blots with sensitivity that is comparable to that observed using enhanced chemiluminescence (ECL)–based western blot detection. WesternDot® secondary antibodies incorporate Qdot® probes enhanced with VIVID® technology, which results in a brighter signal than with the previous-generation Qdot® reagents.

  • Faster time-to-results—eliminate cumbersome HRP and ECL optimization
  • Cost savings—image the blot directly; no more films to process
  • Blot signals stable for weeks to months—obtain multiple exposures without significant reduction in signal

Learn more about WesternDot® 625 secondary antibodies:

Schematic diagram of WesternDot® blot imaging

Western blot detection using (A) WesternDot® secondary antibodies utilizes a more streamlined protocol and results in a more stable signal compared to (B) ECL detection.

A western blot of a dilution series of Jurkat lysate (10 µg to 4 ng) was probed with an anti-GAPDH primary antibody followed by a Qdot® 625 Donkey Anti-Rabbit Secondary Antibody. The blot was imaged on the E-Gel® Imager. When compared to a duplicate western blot detected using ECL followed by imaging on the Fuji FLA-9000 image scanner, the sensitivity was comparable.


Dimensions (W x D x H) Hood (20.3 x 28.4 x 36.5 cm)
Base (21.4 x 30.4 x 11.9 cm)
Viewing dimensions (W x D) 12 x 15 cm
Excitation light source UV light–312 nm
Blue light–470 nm
Power 110 or 220  VAC; 50–60 Hz
      Type CCD
      Gradation 12-bit
      Resolution 1,296 (H) x 964(V);  1.3 megapixels
      Dynamic range 56.77 DB
      Exposure time 0.01 milliseconds to 10 seconds
      Super bright lens F/1.4 improved lens
Optical zoom 6-12 mm
      Field of view 11 x 14 cm
      Emission filter Orange filter (ethidium bromide and SYBR® Safe DNA Gel Stain)
Green filter (Fluorescein, SYBR® Gold, SYBR® Green)
Red filter (Qdot® 625)
      Image capture GelCapture™ Acquisition Software
      1D image analysis GelQuant™ Express Analysis Software
System requirements
      Operating system Windows® XP Professional (English version, SP3, 32-bit), OR
Windows® 7 Professional (English version, 32-bit), Windows 8.1
      Processor Intel® Core™2 Duo, 1.8 GHz
      Memory Minimum 4 GB RAM 

E-Gel® Imager videos

The E-Gel® Imager: 
Revolutionizing Gel Documentation

Unboxing the 
E-Gel® Imager

For Research Use Only. Not for human or animal therapeutic or diagnostic use.