VersaMax ELISA Microplate Reader

A powerful, affordable catalyst for scientific accomplishment

Make the most of your budget with the VersaMax™ ELISA Microplate Reader, our affordable, visible spectrum absorbance reader for 96-well microplates. This richly featured reader gives you the speed, convenience, and economy of monochromator-based wavelength selection for visible absorbance measurements between 340 nm and 850 nm, so you can accomplish more, with less.

  • Eliminate the need for purchasing and changing out filters for wavelength optimization with a monochromator-based wavelength selection for visible absorbance between 340 nm and 850 nm
  • Read up to 2 wavelengths in endpoint or kinetic mode for 96-well plates
  • Report results with confidence: Patented multichannel optical design mimics a dual-beam spectrophotometer, measures each sample in the plate directly, and eliminates error due to variations in light output between optical fibers on other instruments
  • Monitor temperature-sensitive reactions with consistent temperature regulation from ambient to 45°C
  • Mix samples thoroughly in microplate wells with user-programmable Automix feature
  • Analyze data using SoftMax® Pro Software comprehensive data analysis software
  • Automate seamlessly with the StakMax® Microplate Handling Stacker


Microplate Reader Validation


The VersaMax Microplate Reader supports a multitude of absorbance assay categories including:

  • Cell viability, proliferation, and cytotoxicity
  • ELISAs and immunoassays
  • Endotoxin detection
  • Enzyme assays
  • Protein quantitation
  • Microbial growth
  • Phosphotases/kinases
  • Reporter gene assays


SoftMax Pro Software simplifies setting up your assays by providing:

  • Simple set-up and automatic instrument recognition
  • Pre-defined protocols for endpoint and kinetic ELISA protein plus quantification assays such as Bradford, Lowry, BCA, and DC protein assays
  • A wide variety of scan types: Endpoint, Kinetic, Spectrum* and Well Scanning*
  • Standard data reduction settings are preselected as default
  • Automatic data recovery feature

Softmax Pro Software Setup

SoftMax Pro Software offers a variety of customizing options:

  • Predefined calculation options for common data analysis functions    
  • Automatic export to Microsoft Excel
  • Instrument settings and plate read area can be adjusted to suit your experiment's needs
  • Custom data reduction settings can be selected for optimal signal selection
  • Full reports, with font flexibility, and live mini-tables and graphs are now available within the Notes section to simplify the result sharing experience      
  • Contemporary user community enabling protocol exchange and expertise
    sharing among our numerous users

Softmax Pro Software Data Analysis




* available in select instrument models

General Specifications

Dimensions (in.) 8.6 (h) x 22.8 (w) x 15 (d)
Dimensions (cm) 22 (h) x 58 (w) x 38 (d
Weight 30 lb (13.6 kg)
Power Source 90-250 VAC, 50/60 Hz

Performance Specifications

Wavelength Range 340-850 nm
Wavelength Selection Monochromator, tunable in 1-nm increments
Wavelength Bandwidth ≤ 2.0 nm full width half maximum
Wavelength Accuracy ± 1.0 nm across wavelength range
Wavelength Repeatability ± 0.2 nm across all optical channels
Photometric Range 0.000 to 4.000 OD
Photometric Resolution 0.001 OD
Photometric Accuracy/linearity <± 1.0% and ± 0.006 OD, 0.0-2.0 OD
Photometric Precision <± 1.0% and ± 0.003 OD, 0.0-2.0 OD
Stray Light ≤ 0.07% at 340 nm
OD ≥ 3.15
Light Source Xenon Flash Lamp
Microplate Read Time - Endpoint 9 seconds
Microplate Read Time - Kinetic 9-second minimum interval
Temperature Range Ambient + 4 °C, to 45 °C
Temperature Uniformity ±0.5 °C @ 37 °C well-to-well



VersaMax ELISA Microplate Reader



Part Number

VersaMax ELISA Microplate Reader VERSAMAX
 SpectraTest ABS1 Absorbance Validation Plate 0200-6117
StakMax Microplate Handling Stacker StakMax
Microplate Reader Shelf 9000-0756




Number of Citations*: 7,280

Latest Citations:
For a complete list, please click here.

Repeated exposure of male mice to low doses of lipopolysaccharide: Dose and time dependent development of behavioral sensitization and tolerance in an …

TJ BanasikowskiCJ CloutierKP Ossenkopp… - Behavioural brain …, 2015 - Elsevier
... 2.2. Light–dark test apparatus. Behavioral data were collected using eight VersaMax Animal
Activity Monitors (Accuscan Model RXYZCM-16, Columbus, OH). ... 2.5. Experimental procedures.
Mice (n = 40) were habituated to the VersaMax apparatus for 15 min for two days. ...

Estrogens, androgens and generalized behavioral arousal in gonadectomized female and male C57BL/6 mice

X Chu, K Gagnidze, D Pfaff, A Ågmo - Physiology & behavior, 2015 - Elsevier
... 2.2. Apparatus. Mice were housed individually inside a VersaMax monitor (Accuscan Instruments)
consisting of an acrylic cage (18 cm × 29 cm × 13 cm) equipped with horizontal infrared beams
and sensors spaced 2.54 cm (1 in.) apart in the horizontal plane. ...

No effects of Hyperosmolar Culture medium on Tissue Regeneration by Human Degenerated Nucleus Pulposus Cells despite Upregulation Extracellular Matrix …

A Krouwels, J Popov-Celeketic, SGM Plomp… - Spine, 2015 -
... protocol. Duplicates were measured on a Versamax microplate reader (Molecular Devices LLC, ...
Sulfated GAG content was measured with a 1,9-dimethyl-methylene blue (DMMB, Sigma) assay
with chondroitin-6-sulfate as the standard using a Versamax microplate reader. ...

[PDF] Model of Control and Visualization of Work of Belt Conveyors

Z Łukasik -
... The drives take a current I = 500 mA. The model uses the GE Fanuc PLC VersaMax Micro
IC200UDR164 (Fig. ... Fig. 2. Appearance GE Fanuc PLC VersaMax Micro IC200UDR164 used
in the model Table 3. Parametry PLC GE Fanuc VersaMax Micro IC200UDR164 [6] ...

Antidiabetic Potential of Hydro‐Alcoholic Extract of Moringa Peregrina Leaves: Implication as Functional Food for Prophylactic Intervention in Prediabetic Stage

MF Ullah, SH Bhat… - Journal of Food …, 2015 - Wiley Online Library
... Extract (5–100 μg/mL) or gallic acid standards (final concentration 0.5–2.5 μg/mL) were added
to diluted ABTS● + solution (mixed) and the absorbance was recorded after 6 min at 734 nm
using a microplate reader (Versamax, Molecular Devices, Sunnyvale, CA). ...

Resveratrol analog piceatannol restores the palmitic acid‑induced impairment of insulin signaling and production of endothelial nitric oxide via activation of anti‑ …

SO Jeong, Y Son, JH Lee… - Molecular …, 2015 -
... The resulting purple formazan crystals were dissolved in DMSO. The solutions were then
loaded in a 96-well plate, and analyzed on an automated microplate spec- trophotometer
(VersaMax; Molecular Devices, Silicon Valley, CA, USA) at 570 nm. ...

[HTML] Quercus infectoria Gall Extract Enhanced the Proliferation and Activity of Human Fetal Osteoblast Cell Line (hFOB 1.19)

H Hapidin, D Rozelan, H Abdullah… - … Malaysian journal of …, 2015 -
... hour. The optical density was will determined at 570 nm by using a microtiter plate
reader (VersaMax, US). ... The osteocalcin levels were measured using an ELISA plate
reader (VersaMax, US) at 450 nm. Statistical analysis. Results ...

Anti-angiogenic activity of macrolactin A and its succinyl derivative is mediated through inhibition of class I PI3K activity and its signaling

Y Kang, SC Regmi, MY Kim, S Banskota… - Archives of pharmacal …, 2015 - Springer
... were incubated for an additional 4 h. Then, the media were removed and the insoluble MTT
formazan was dissolved in 200 μl of dimethyl sulfoxide (DMSO) for 30 min at 37 °C. Absorbance
was measured at 540 nm using a microplate reader (VERSAmax, Molecular Devices). ...

Preparation and characterization of a decellularized cartilage scaffold for ear cartilage reconstruction

L Utomo, MM Pleumeekers, L Nimeskern… - Biomedical …, 2015 -
... The metachromatic reaction of DMMB was monitored using a VersaMax
spectrophotometer at 530 and 590 nm. Shark chondroitin sulfate C was used as a
standard. ... Absorption was measured at 513 nm on a VersaMax plate reader. ...

[HTML] Dieckol, a Component of Ecklonia cava, Suppresses the Production of MDC/CCL22 via Down-Regulating STAT1 Pathway in Interferon-γ Stimulated HaCaT …

NJ Kang, DH Koo, GJ Kang, SC Han… - Biomolecules & …, 2015 -
... Then, the absorbance of each well was measured at 450 nm with a VersaMax ELISA microplate
reader (Molecular Devices Inc., Sunnyvale, CA, USA). ELISA analysis. ... Absorbance at 450 nm
was recorded by using the VersaMax ELISA microplate reader. Western blot analysis. ...


* as of June 26, 2015. Source: Google Scholar