OPTIZEN Alpha is a spectrophotometer that uses a double-beam method.

OPTIZEN Alpha can measure the transmittance or absorbance at each wavelength of a sample in ultraviolet and visible light bands to determine the quantitative characteristics such as concentration and purity.

OPTIZEN Alpha, which can be used widely from general analytical experiments to professional research fields, guarantees accurate measurement and excellent reproducibility and provides reliable results in various fields such as the environment, biotechnology, and chemistr


The previous single beam type spectrophotometer has a weak point of error occurrence in measuring a sample, because of the movement of a light source by time lag in measuring the strength of between a reference light and a light from sample. To solve the problem, OPTIZEN Alpha was designed as a double-beam type spectrophotometer. The system utilizes an additional reference beam to improve the measurement performance by compensating the intensity fluctuation of its light source.


Product Features

  • User Convenience
    All functions of existing PC software are installed in OPTIZEN Alpha, making it faster and more convenient.
  • Incredible Speed
    Fast and flexible software delivers the best result with analytical speeds up to 1.5 times that of existing products.
  • Rapid Service
    Quick services are available as OPTIZEN Alpha is made in Korea from design conception to manufacturing based on the unique technology of K LAB Co., Ltd.
  • Extensive Scalability
    OPTIZEN Alpha is designed for high-precision/high-resolution measurement in widebands from ultraviolet to visible light and can be used in various applications.
  • Compact Size
    Compact OPTIZEN Alpha enhances the efficiency of the experimental space.
  • Sensuous Design
    Now, you can enjoy a greater level of pleasure with a sensuous design.

Main Charateristics

  • A world-class measurement performance
  • Wide-size color screen (ALPHA: 8”)
  • Various cell compatibility and fast cell type choice
  • Automatic measurement of lots of samples by equipping multi-cell.
  • Convenient voice service and volume control
  • Emotional design

Modes for Measurement

  • Photometric Mode
    This mode allows you to measure the absorbance and concentration of a sample at a specific wavelength.
  • Quantitation Mode
    This mode allows you to quantitatively analyze a sample using the calibration curve.
  • Spectrum Mode
    This mode allows you to acquire the absorption or transmission spectrum in the desired wavelength band.
  • Kinetics Mode
    This mode allows you to measure the absorbance or transmittance of a sample over time.
Photometric Mode
  • · In this mode, the absorbance (Abs) (or transmittance (%T)) at a specific wavelength can be easily measured.
  • · The factor (K) value can be set to allow a simple quantitative test (C = K × A) on a sample to be performed making it possible for absorbance (Abs) measurement.
  • · Up to 8 wavelengths can be set, and the absorbance at each wavelength is measured automatically.
  • · Automatic analysis for up to 7 samples is possible using the multi-cell holder.
Quantitation Mode
  • · It is a mode that can measure and manage the calibration curve by utilizing the multi-cell holder.
  • · Quantitative analysis for a sample of interest can be performed using a calibration curve made by up to 7 concentrations of the sample.
  • · Four types of calibration curves including linear (zero-crossing), linear, quadratic, and cubic types are provided.
  • · Accurate calibration curve can be created with the values measured repeatedly for a maximum of 5 times.
Spectrum Mode
  • · This mode allows the user to check the spectrum of the desired wavelength band.
  • · Absorbance (Abs) and transmittance (%T) data can be switched using a shortcut key.
  • · Automatic spectrum analysis for up to 7 samples (excluding the reference sample) is possible.
  • · This mode includes the functions to zoom in the section and to find the Peak/Valley location of the spectrum.
Kinetics Mode
  • · This mode allows the user to check the change in absorbance(or transmittance) over time at a specific wavelength.
  • · This mode is measured at regular intervals, and the minimum interval that can be set is for 1 second.
  • · This mode’s progresses during the measurement is displayed, and 24-hour measurement is possible.
  • · The changes in the absorbance of 7 samples can be obtained automatically.

Product Qualification

Photometrics SystemDouble-beam type
MonochromatorCzerny-Turner type with 1200 lines/nm blazed grating
Light SourceTungsten Halogen Lamp & Deuterium Lamp
Lamp interchange Wavelength340~410 nm (Default 370 nm)
DetectorSilicon Photodiodes
Spectral Bandwidth1 nm (190 to 1100 nm)
Wavelength Range190 to 1100 nm
Wavelength Setting0.05 nm
Wavelength Accuracy±0.3 nm (For entire range)
±0.1 nm (656.1 nm)
Wavelength Repeatability<± 0.1 nm
Slew RateAbout 13,500 nm/min
Scan Speedmax 6,000 nm/min
Photometric RangeAbsorbance : -4 to 4 Abs
Transmittance : 0 % to 400 %
Photometric Accuracy±0.002 Abs at 0.5 Abs
±0.004 Abs at 1.0 Abs
±0.006Abs at 2.0Abs
Photometric repeatability± 0.0002 at 0.5 Abs
± 0.0006 at 1.0 Abs
± 0.001 at 2.0 Abs
Baseline stability< 0.0003 Abs/h
Baseline flatness<± 0.0005 Abs
Stray light< 1.0 % at 198 nm (KCl)
< 0.02 % at 220 nm (NaI)
< 0.02 % at 340 nm (NaNO₂)
Standard cell HolderAutometic Rotary type 8-position Multi-Cell Holder
Operating system(OS)Windows 10 (Embedded PC);
Display8-inch color LCD with touch screen
Power Requirement100~240 V; 50~60 Hz
Weight(kg)14 kg
PC Software(optional) OPTIZEN View for Windows®
(optional) OPTIZEN Secure™

* The contents of this document may be changed without notice.

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