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SpectraMax® i3x – Multi-Mode Microplate Reader

SpectraMax® i3x – Molecular Devices’ Maxline microplate readers integrate multiple functions in one machine: Western blot, cell counting, injectors. SpectraMax® i3x can be flexibly configured according to user needs, increasing experimental efficiency.

Unlimited breadth of user-installable application modules expands research capabilities

The SpectraMax® i3x Multi-Mode Microplate Reader can perform a wide range of essential cell-based and biochemical assays using the included absorbance, fluorescence, and luminescence detection modes. With the SpectraMax® MiniMax™ 300 Imaging Cytometer, industry-leading SoftMax® Pro Software, and user-configurable detection modules, this unique reader enables users to add optional detection modules at any time to expand the reader’s capabilities and explore cellular pathways and protein expression on one microplate reader. This includes AlphaScreen/AlphaLisa, time-resolved fluorescence, TR-FRET/HTRF, fluorescence polarization, dual injectors, and western blot detection. Transmitted light and fluorescence channels offer the option to image stain-free or use cellular dyes to get a better view of cytotoxicity, cell proliferation, and phenotypic changes.

Capture flash assays with ease Capture flash assays with ease

The SpectraMax i3x Injector Cartridge with SmartInject® Technology expands your research capabilities to include flash-based luminescence applications including dual luciferase.

Reduce background noise Achieve unparalleled sensitivity

The super-cooled PMT reduces background noise, providing greater sensitivity and an expanded dynamic range.

Increase fluorescence performance Increase fluorescence performance

An innovative combination of xenon flash lamp and LEDs provides unmatched signal strength and superior sensitivity with Spectral Fusion™ Illumination.

Add Cellular Imaging to your Plate Reader Workflow

Observe the viability of your cells with the field-upgradeable cellular imaging option for the SpectraMax i3x Multi-mode Detection Platform.

The field-upgradeable SpectraMax® MiniMax™ 300 Imaging Cytometer enables quick imaging and analysis of cells and gives you a front-row view of phenotypic changes that accompany cytotoxicity, cell proliferation, and protein expression. Now with StainFree™ Cell counting Technology, additional brightfield analysis features, and fluorescent green and red detection channels.

SpectraMax i3x

GxP Compliance Solutions – Assure data integrity and compliance for GMP/GLP laboratories.

Our comprehensive suite of proven compliance solutions for GMP/GLP labs can advance your efforts to quickly and confidently establish a compliant laboratory.

  • Best-in-class SpectraMax Microplate Readers and Washers
  • Industry-leading SoftMax Pro GxP Software – our most secure software to achieve full FDA 21 CFR Part 11 compliance
  • IQ/OQ/PM Services preserve instrument documentation in a digital and compliant format
  • Software Installation & Validation Services verify and document that required components are installed to operational specification
  • SpectraTest Validation Plates and Recertification Services tests the performance of your microplate reader to ISO 17025 standards

General specifications

Read modes Absorbance Fluorescence (top/bottom read)

Luminescence (top read)

Time-Resolved Fluorescence (top read)

Fluorescence Polarization (top read)

HTRF (top read)

AlphaScreen (top read)

Wavelength ranges Abs: 230 – 1000 nm

FL Ex: 250 – 830 nm

FL Em: 270 – 850 nm

Lumi: 300 – 850 nm

Wavelength selection Cartridge filters and monochromator tunable in 1 nm increments
Absorbance photometric accuracy/linearity < ±0.010 OD ±1.0%, 0 – 3 OD VIS 0 – 2 OD UV
Absorbance photometric precision/repeatability < ±0.003 OD ±1.0%, 0 – 3 OD VIS 0 – 2 OD UV
Sensitivity top read optimized FL: Mono: 0.5 pM fluorescein 96 well, 1 pM fluorescein 384 well; Cartridge: 0.1 fmol/well in 75 μL fluorescein 384 well, 0.03 fmol/well in 8 μL fluorescein 1536 well

Lumi: Mono: 3 pM ATP-Glow 96 well, 6 pM ATP-Glow 384 well; Cartridge: 20 amol ATP-flash TRF cartridge: 3 amol/well in 100 μL europium (0.03 pM) 384 well, 1 amol/well in 8 μL europium (0.125 pM) 1535 well

FP cartridge: 3 mP (75 μl) fluorescein 384 well, 6 mP (8μl) fluorescein 1536 well

AlphaScreen cartridge: <100 amol/well 384 well

Light source(s) High power xenon flash lamp LEDs in visible range
Detector(s) Silicon photodiode Cooled photomultiplier tube
Read types (endpoint, kinetic, etc) Endpoint Kinetic Spectrum scan Well scan
Read times Abs: 29 seconds

FL: 22 seconds

Lumi: 21 seconds

TRF: 21 seconds

FP: 38 seconds

AS: 22 seconds

Plate shaking Linear Orbital
Injectors true
Imaging true
Western Blot true
Robotics / automation true
Plate type(s) 6-1536 well plates
Temperature control Ambient + 4°C to 45°C
Dimensions H 32.5 cm x W 39.2 cm x D 60.55 cm
Validation tools Absorbance validation plate

Fluorescence validation plate

Luminescence validation plate

Multi-mode validation plate

SoftMax® Pro GxP Software

Absorbance, Fluorescence and Luminescence true
Time-Resolved Fluorescence (TRF) true
Fluorescence Polarization (FP) true
Htrf true
Alpha Screen true

Technical Specifications for SpectraMax MiniMax 300 Imaging Cytometer

Light source Proprietary solid state illumination, White, 460/20 nm and 625/20 nm excitation
Detector 1.25 megapixel, 12-bit high sensitivity CCD camera
Emission Brightfield; Green 541/108 nm; Red 713/123 nm
Objective Single 4X objective
Autofocus Proprietary laser scanning autofocus
Resolution 1.9 μm x 1.9 μm pixel size
Data acquisition and analysis software SoftMax® Pro Software MiniMax Imaging Edition
Imaging speed* (1 color – 96 wells) Acquisition 3:40

Acquisition + Analysis 6:30

Specimen carriers ANSI/SBS-conformant microplates, 96 and 384 wells
Dimensions (cm) 39.2 cm W x 19.5 cm H x 60.6 cm D (SpectraMax® MiniMax™ 300 Imaging Cytometer)

39.2 W x 44.0 H x 60.6 L (with base system)

Expandable Icon User-configurable applications

User-installable detection modules expand the reader’s detection capabilities to include AlphaScreen, time-resolved fluorescence, TR-FRET (including HTRF), fast kinetics with injectors, western blot detection, and more.

Picks Icon No-stain cell analysis

The StainFree™ Cell Detection Algorithm for brightfield cell segmentation enables cell counting and confluency measurement without destructive stains, simplifying the cell analysis workflow.

Flexibility Icon Multi-channel functionality

Two fluorescence detection channels on the MiniMax 300 cytometer enable the analysis of cell viability or cell toxicity assays, including viability assays and transfection efficiency.

Analysis Icon Cellular pathway analysis

Cell confluence and cell viability imaging, western blot analysis, and quantitation of nucleic acids and protein, can be captured on one reader.

Time Icon Spectral Optimization Wizard

This built-in technology enables users to optimize their assay in a single-step by quickly identifying the best excitation and emission wavelengths.

Target icon Auto Intensity Adjustment

Our patented technology acquires data over a wide dynamic range without the need to re-read the plate due to saturation effects. PMT gain adjustment is bypassed with the use of high-power LEDs as part of the Spectral Fusion Illumination.

Absorbance