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 Absorbance Measurement System

product model PRA-201
PRA-201 brochure
Image PRA-201 PDF

Movie clips

PRA-201 Movie 1

Absorbance Measurement System PRA-201

 System Configuration Example
figure System Configuration Example figure Absorbance
 Measurement Process Example - Photoisomerization of Azobenzene
figure Measurement Process
figure PRA-201 Software

Various measurement conditions are settable.
- Absorbance measurement after/with excitation
- Exposure time settings
- Light intensity adjustment
- Automatic repetitive measurement
... and so on.

The software CD-ROM is included in the package.

  • Photoreaction material development
  • Artificial photosynthesis
  • Photochromism
  • Photocatalyst
  • Durability test
  • Material evaluation
product model MAX-350

The MAX-350 is suitable as the excitation light source.

  • High power monochromatic light
  • IR heat blocking
  • Built-in filter wheel
Magnetic Stirrer

The magnetic stirrer enables you to perform a measurement while stirring a sample.



Absorbance measurement section

 - Light source

Xenon flash lamp

 - Wavelength range

200 - 800nm

 - Optical configuration


 - Wavelength accuracy


 - Wavelength reproducibility


 - Resolution

3.4±0.6mm (Calculated value at 546.1nm) *No smoothing process

 - Photometric accuracy

±0.03Abs(0 - 1.0Abs) *1

 - Photodetector

Back-Illuminated CCD sensor

 - Exposure time

10 - 500 msec

 - Integration time

1 - 60 times

 - Corresponding cell size

External size 12.5(W)mm x 12.5(D) x 45(H)mm

Powermeter section

 - Wavelength range

260 - 800nm

 - Measurement accuracy

Within ±15%

Input voltage

AC100V 50/60Hz

Apparent power

Less than 30VA (AC100V/50Hz)


USB2.0, 12Mbps (Full speed)

Safety mechanism

Sample chamber door is open

Recommended environment

Temperature 23.5 deg C (Operating range 10-35 deg C)


*Avoid unstable environment


Humidity 20-70% *Avoid condensation


380(W) x 260(D) x 170(H)mm


Less than 8.5kg

*1 Only by our measurement condition
* An optical filter is mountable to block an excitation light in the chamber.
*PRA-201 can also be used as a spectrophotometer when not connecting with a light source.