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Tohoku CLA-FL2


Tohoku CLA-FL2

The chemiluminescence (CL) analyzer allows the analysis of the oxidation behavior of polymers and organic materials under the influence of different gases and temperatures. Main focus of the analysis are factors like initial oxidation level or determination of the oxidation induction time (OIT) and temperature (OOT). 

"Chemiluminescence"(chemical luminescence) is the phenomenon arising from chemical reactions. Compounds generated in an excited state by chemical reactions, released to the ground state, discharge light. Exposed to the atmosphere almost all materials generate chemiluminescence as a result of oxidation reactions.

The Chemiluminescence Analyzer (CLA series) is the most sensitive photon counting device and the only spectrometer with that sensitivity in the world. It detect down to 50 photons/cm2/sec (about 1/10000 of a firefly) 10-15 Watts.

It is important to evaluate and prolong the life-times of new products. Conventional methods cannot evaluate the early-stage levels of deterioration and inefficient time-consuming testing is necessary:

• Sample collection from the market -> several years
• Outdoor exposure test -> few years
• Accelerated testing -> several months

Conversely, our CL method directly detects very small traces of peroxide allowing a material's oxidation level to be determined very quickly.

To use Photomultiplier (PMT) as a detector. This is used with high performance liquid Chromatograpy (HPLC) and the value output from 0 to 1V. To receive the data, you need to some recorder.

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  • Specifications
  • Features
  • Applications
  • Sample Chamber
  • PDFs



300nm~650nm (center wavelength 420nm)

Measurement item

CL Intensity

Sample chamber


Power Source

AC 100V, 50/60Hz, 5A


310(W) x 420(D) x 524(H)mm – about 35kg

  • Highest light sensitivity with up to 50 photons/cm² per second
  • Variable heated sample holder with Tmax of 350 °C and gas purging
  • Dynamic and isothermal tests
  • Recording of full CL spectrum
  • Considerable advantages over dynamic differential scanning calorimetry


Main benefits of chemiluminescence:

  • Evaluation of the initial oxidation state and oxidative stability
  • Determination of oxidation induction time OIT and oxidation induction temperature OOT
  • Direct measurements of peroxides
  • Multiple measurements; sample imaging via CCD camera
  • Detection of active oxygen, micro analysis with high sensitivity
  • Monitoring of sono and physiological luminescence processes


Advantages over dynamic differential scanning calorimetry (DSC)

  • DSC requires higher temperatures and degradation of the sample
  • Determination of OIT and OOT at low temperatures and in early stages
  • Determination of the oxidation level of the sample

Application Fields

Oxidation for Polymer, Paints, Rubber

  • Estimate stability for new material under R&D
  • Receiving inspection of the material
  • Quality control of the product
  • Finding best condition of Molding processing
  • Estimate recycle material
  • Shortening the development terms

Oxidation for Oil, Food, Chemicals

  • Quality control of the product
  • Shortening the development terms

Estimate additives

  • Finding new material
  • Finding best condition such as density or combination

Micro Analysis

  • To detect peroxide, hydroperoxide, hydrogen peroxide etc. with high sensitivity (femto mole, ppb level)

Ultra sensitive Fluorescent Assay

  • Study for Cancer, surface analysis


  • Imaging detection for sample oxidation


  • Detect an electron irradiation history
  • Monitoring surface treatment
  • Cavitation or Ultrasonic wave


Batch Type sample chamber to use Maximum φ20mm sample. Possible to room temp. to 350 degree and set the heating rate.



Batch Type sample chamber to use Maximum φ50mm sample. Possible to room temp. to 160 degree.



Batch Type sample chamber to use Maximum φ50mm sample. Possible to room temp. to 100 degree and mixing the sample with Stirring bar.



Flow type sample chamber. It consists 2 inlet ports for sample liquid and mix inside. The mixed sample come out from 1 outlet port.



This is for CLA-IMG. You can set 6 samples of maximum φ20mm. Possible to room temp. to 160 degree.



Installed Laser Diode to irradiate the Laser light to the sample. The laser power is about 0.2mW.