GloMax® Explorer Multimode Microplate Reader

GloMax® Explorer Multimode Microplate Reader

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Get Up and Running Quickly

The GloMax® Explorer is a high-performance multimode plate reader that allows you to get up and running quickly, generating the data you need from your experiments. Simply unpack it, plug it in, and begin your experiments. You can also interpret your results using integrated data analysis software. Developed with Promega reagents to provide a simple means of detecting advanced chemistries, the GloMax® Explorer measures luminescence, fluorescence intensity and visible absorbance. The GloMax® Explorer can be used as a standalone plate reading instrument or integrated into your high-throughput automated workflow.

Preloaded Protocols for Faster, Easier Data Analysis

GloMax® plate readers have high sensitivity and a wide dynamic range, so you can detect both high and low signals on the same plate and have confidence in the accuracy of the signal recorded from each well. These instruments provide a range of options for your throughput needs and are equipped with integrated software that makes data analysis easy. GloMax® instruments come preloaded with protocols designed to work seamlessly with a wide variety of Promega luminescent and fluorescence-based assays at the touch of a button.

GloMax® Application Notes

No need to reinvent the wheel—we’ve already used GloMax® instruments for everything from cell viability, toxicity and metabolism, kinase and cell signaling, reporter gene assays, nucleic acid quantitation for NGS sequencing, PROTACs and protein degradation, bioassays, BRET, ELISAs and even water quality testing. Search our Application Notes collection for examples using GloMax® instruments with a wide range of bioluminescence- and fluorescence-based assays.


The GloMax® Explorer multimode plate reader delivers maximum flexibility with minimal user intervention and can be integrated into low- and medium-throughput automation workflows. This instrument provides researchers superior luminescence sensitivity and dynamic range for both strong and weak bioluminescence experimental samples, as well as a seamless integration with Promega’s bioluminescent cell and gene reporter assays.


  • Simple touch-screen navigation with full PC capabilities
  • Choose from over 50 preloaded protocols and spend less time optimizing
  • Build custom protocols using the intuitive drag-and-drop interface
  • Export data to a network, cloud or any desired drive

Superior Performance

  • Highest instrument sensitivity to measure the lowest assay signals
  • Low cross-talk between wells gives you better, more usable results
  • Broad dynamic range of the instrument extends the linear range of your assay


  • IQ/OQ Service available
  • Provides the required technical elements of a part 11-compliant system when used with the appropriate laboratory workflow:
    • User Authentication and Authorization
    • Data Integrity and Protection
    • Electronic Signatures
    • Audit Trails

Upgrade as Needed

  • Choose the components you need for your current work
  • Add detection modules later to gain functionality as your experimental needs grow

Accurate Results from Every Well

There are three ways that microplate readers can affect how much useful information you get from each plate. Poor sensitivity may cause you to miss low-level samples that could be the “hit” you are looking for. Letting the signal from bright wells spill into adjacent wells allows crosstalk to occur and skews your experimental results. And a narrow detection range limits the accuracy and reproducibility that your work requires. With the GloMax® plate readers, you can rest easy and have confidence in your results.

Illustration of GloMax plate reader sensitivity

Superior sensitivity so you don’t miss hits

Glomax® microplate readers offer superior sensitivity and auto-gain adjustment letting you measure weak and strong signals on the same plate.

GloMax plate readers minimize crosstalk
Masking so crosstalk doesn’t mislead your results

The masking design of GloMax® microplate readers means you can be confident that the results from each well are not skewed by signal from neighboring wells.

GloMax plate readers detect a broad signal range
Broad detection range so you don’t limit your experiments

With the broad detection range of GloMax® microplate readers, you can measure signals ranging from high intensity to near physiological levels.

Not sure if GloMax® Discover is the right choice for your lab?

Find the instrument that’s right for your needs. Compare Plate Readers

Microplate and Handheld Fluorometers

Design Features

Instrument Specifications

Detection Modes

Luminescence, Fluorescence Intensity, Visible Absorbance

Sample Format

6-, 12-, 24-, 48-, 96- and 384-well plates

Tablet PC

Windows® 8.1 or 10 Tablet PC with USB connection to instrument

Read Speed

96-well plate: less than 1 minute; 384-well plate: less than 3 minutes

Automation Compatibility

Hardware and software accessible to third-party hardware/software control, including LIMS.


18.5in (46.9cm) width
19.5in (46.5cm) depth
10in (25.4cm) height without Tablet and PC mounted
16in (35.5cm) height with Tablet and PC mounted


Approximately 60lb (27kg)

Power Requirements

120VA, 50/60HZ


1-year parts and labor warranty included

Regulatory Compliance

For Research Use Only. Not for use in Diagnostic Procedures

Luminescence Module Specifications


Top-reading, head-on photon counting photomultiplier tube (PMT)

Wavelength Range


Detection Limit

3 × 10–21 moles of luciferase

Linear Dynamic Range

9 logs


Less than 3 × 10–5 (white, 96-well plate, Corning 3912)

Fluorescence Module Specifications



Light Source

Wavelength-matched LED

Read Position

Top reading

Wavelengths selection

Filter module with 5 standard excitation and emission filters. Empty filter positions are available for custom excitation and emission wavelengths.

Wavelengths included

UV (Ex: 365nm, Em: 415–445nm) Blue (Ex: 475nm, Em: 500–550nm) Green (Ex: 520nm, Em: 580–640nm) Red (Ex: 627nm, Em: 660–720nm) AFC (Ex: 405nm, Em: 495–505nm)

Detection Limit

2fmol fluorescein/200µl

Linear Dynamic Range

>6 logs (assay-dependent)

Visible Absorbance Module Specifications (Cat.# GM3500 only)


Top-reading, head-on photon counting photomultiplier tube (PMT)

Light Source

Xenon flash lamp

Spectra Range


Filter Wheel

5 absorbance filters included

Wavelengths included

405, 450, 490, 560 and 600nm 10nm band pass

Detection Limit

0.1 O.D.

Dynamic Range

0–4.0 O.D.

Injector System Specifications

Number of injectors (optional)

Two injectors

Dispense Volume Range

5–200µl in 1µl increments

Plate Compatibility

6-, 12-, 24-, 48- and 96-well plates

Injection Speed

20–500µl per second

Waste Collection Tray Volume

Approximately 50ml

Void Volume


Heating System Specifications

Temperature Range Ambient to 45°C

Shaker System Specifications

Shaking Pattern Linear or orbital patterns
Shaking Intensity 100–500 cycles/minute

PC Requirements

Operating System

Windows® 8.1 or 10 Pro, 64 bit, with USB connection to instrument



Disk Space


Other Requirements

Microsoft.NET 4.0 Framework (full version), Microsoft Excel 2013 Professional

Available Separately

Product Catalog #
Luminometer Light Plate E6531
GloMax® Discover Fluorescence Filter Paddle GM1100
GloMax® Discover 96 Half-Position Aperture Assembly GM1050
GloMax® Discover 96-Position Aperture Assembly GM3040
GloMax® Discover 384-Position Aperture Assembly GM3041
GloMax® Dual Injectors with Pumps GM3030
Inner and Outer Injector Tubing, Natural GM3014
GloMax® Explorer Visible Absorbance Module Upgrade GM3520
GloMax® Explorer UV-Visible Absorbance Module Upgrade GM3560
GloMax® Explorer BRET/FRET Upgrade GM3570
GloMax® Discover-Explorer Sales Rental E5310
GloMax® Discover or Explorer Installation Qualification SA1104
GloMax® Discover or Explorer Operational Qualification SA1105
GloMax® Discover or Explorer Installation and Operational Qualification SA1106
GloMax® Explorer Standard Service Agreement SA1107
GloMax® Discover or Explorer Preventive Maintenance SA4030


Use Restrictions

For Research Use Only. Not for Use in Diagnostic Procedures.

Storage Conditions

Patents and Disclaimers

Patent Pending.