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Spectrophotometer

A spectrophotometer is a scientific instrument that measures the amount of light of a specified wavelength which passes through a medium. According to Beer’s law, the amount of light absorbed by the medium is proportional to the concentration of the absorbing material or solute present. Marshall Scientific always has spectrophotometers in stock made by notable brands such as Agilent, Milton Roy, and Beckman. All of Marshall Scientifics spectrophotometers are tested to perform at factory specifications. Please view our inventory of spectrophotometers and feel free to give us a call or send us an email if you have any questions.

Spectrophotometers
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Molecular Devices VersaMax Microplate Reader Molecular Devices VersaMax Microplate Reader

Molecular Devices VersaMax Microplate Reader 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

< 0.05% @ 340 nm

Light Source

Xenon Flash Lamp

Microplate Read Time – Endpoint

9 seconds

Microplate Read Time – Kinetic

9-second minimum interval

Temperature Range

Ambient + 4° to 45°C

Temperature Uniformity

±0.5 °C @ 37 °C well-to-well


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Molecular Devices Gemini EM Fluorescence Microplate Reader Molecular Devices Gemini EM Fluorescence Microplate Reader

Molecular Devices Gemini EM Specifications

General Info

Dimensions (H x W x D)

8.6 x 22.8 x 15 in (22 x 58 x 38 cm)

Weight

35 lbs (16 kg)

Power Source

100-240 VAC, 50/60 Hz

Performance

Wavelength Range Excitation

250 to 850 nm

Wavelength Range Emission

250 to 850 nm

Wavelength Selections

Monochromator, tunable 1.0 nm increments

Wavelength Bandwidth

9 nm

Wavelength

< ± 2.0 nm

Top Read Sensitivity

3.0 fmol/well FITC 200 µl in 96 wells

Bottom Read Sensitivity

8.0 fmol/well FITC 200 µl in 96 wells

Light Source

Xenon flash lamp

Microplate Read Time

Normal Mode

96 wells in 15 seconds

384 wells in 45 seconds

Dynamic Range

6 orders of magnitude

Temperature Range

Ambient + 4° up to 45°C

Temperature Uniformity

± 1° at 37°C

Our Price: $9,695.00

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Agilent 8453 G1103A Spectrophotometer Agilent 8453 G1103A Spectrophotometer

Agilent 8453 Spectrophotometer (Model # G1103A)


The Agilent 8453 UV-Vis Spectrophotometer uses a photodiode array for simultaneous measurement of the complete ultra-violet to visible light spectrum in less than one second, making it extremely efficient within the lab with exceptional reliability and repeatability. With its diode-array technology, the Agilent 8453 Spectrophotometer is much faster and more sensitive than comparable conventional instruments. The Agilent 8453 UV-Vis system offers powerful data analysis and data archival to ensure compliance with good laboratory practices (GLP) and pharmacopoeia requirements.

Our Price: $6,295.00

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Beckman DU-640 Spectrophotometer Beckman DU-640 Spectrophotometer

Beckman DU-640 Spectrophotometer


The Beckman DU-640 UV Vis Spectrophotometer is an efficient standalone system that utilizes standard components, including a CPU, graphical user interface, monitor, keyboard, 3-button mouse, and necessary I/O ports that help keep procedures efficient. This spectrophotometer features many different program settings, such as fixed wavelength, wavelength scanning, scatter correction, net A, time-based kinetic/rate determination, subtraction/addition, and spectra manipulation. The UV and Vis lamps of the DU-640 also have power switches that work independently from that of the system.

Our Price: $1,995.00

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Molecular Devices SpectraMax Microplate Reader Molecular Devices SpectraMax Plus Microplate Reader

Molecular Devices SpectraMax Plus Microplate Reader Specifications

Spectral Range

190-1000 nm, tunable in 1 nm increments

Wavelenght Range

190-1000 nm

Wavelength Selection

Monochromator, tunable 1.0nm increments

Speed Read Mode

Reads 96-well microplates in 5 seconds; Reads 384-well microplates in 16 seconds

Wavelength Bandwidth

2 nm

Wavelength Accuracy

< ± 1.0 nm

Wavelength Repeatability

± 0.2 nm

Photometric Range

0.0 to 4.0 OD

Photometric Resolution

0.001 OD

Photometric Accuracy (plate)

< ± 0.006 OD ± 1.0%, 0.0 - 2.0 OD

Photometric Accuracy (cuvette)

< ± 0.005 OD ± 1.0%, 0.0 - 2.0 OD

Photometric Precision

< ± 0.003 OD ± 1.0%, 0.0 - 2.0 OD

Photometric Baseline Flatness

< 0.001 OD

Stray Light

< 0.05% @ 230 nm

Light Source

Xenon Flash Lamp

Temperature Range

Ambient + 4°C up to 45°C

Temperature Uniformity (plate)

± 0.5 °C @ 37°C

Dimensions

22 cm (h) x 58 cm (w) x 38 cm (d)

Weight

30lbs

Our Price: $6,895.00

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Molecular Devices SpectraMax 384 Plus Microplate Reader Molecular Devices SpectraMax 384 Plus Microplate Reader

Molecular Devices SpectraMax 384 Plus Microplate Reader Specifications

Spectral Range

190-1000 nm, tunable in 1 nm increments

Wavelength Range

190-1000 nm

Wavelength Selection

Monochromator, tunable 1.0nm increments

Speed Read Mode

Reads 96-well microplates in 5 seconds; Reads 384-well microplates in 16 seconds

Wavelength Bandwidth

2 nm

Wavelength Accuracy

< ± 1.0 nm

Wavelength Repeatability

± 0.2 nm

Photometric Range

0.0 to 4.0 OD

Photometric Resolution

0.001 OD

Photometric Accuracy (plate)

< ± 0.006 OD ± 1.0%, 0.0 - 2.0 OD

Photometric Accuracy (cuvette)

< ± 0.005 OD ± 1.0%, 0.0 - 2.0 OD

Photometric Precision

< ± 0.003 OD ± 1.0%, 0.0 - 2.0 OD

Photometric Baseline Flatness

< 0.001 OD

Stray Light

< 0.05% @ 230 nm

Light Source

Xenon Flash Lamp

Temperature Range

Ambient + 4°C up to 45°C

Temperature Uniformity (plate)

± 0.5 °C @ 37°C

Dimensions

22 cm (h) x 58 cm (w) x 38 cm (d)

Weight

30lbs

Our Price: $7,695.00

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Molecular Devices Gemini XS Fluorescent Microplate Reader Molecular Devices Gemini XS Fluorescent Microplate Reader

Molecular Devices Gemini XS Fluorescent Microplate Reader Specifications

Fluorescence Photometric Performance

Dual Monochromators

1nm increments

Wavelength Range

250-850nm

Bandwidth (Excitation & Emission)

9 nm

Time Resolved Fluorescence

Data Collection

50-1450 µ/sec, 200µ/sec increments

Sensitivity

0.5/ well

Luminescence Performance

Wavelength Range

250-850nm

Detection Limit

10 amol/well Alkaline Phosphate 200 µl/well

General Specifications

Microplate Formats

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

Light Source

Xenon flash lamp

Detector

Photomultiplier (R-3896)

Read Time

96 < 27 sec, 384 < 45 sec

Shaker Time

0 to 999 seconds

Temperature Control

Ambient +4°C - 45°C

Our Price: $7,695.00

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