MicroDigital Co., Ltd.
Biomedical System



Introducing the Ubi-490: A Touchscreen Single Beam UV/Vis Spectrophotometer

The Ubi-490 represents a breakthrough in absorbance measurement technology, offering a versatile device suitable for both educational and industrial applications. With its user-friendly interface and intuitive software, it enables effortless operation and delivers accurate results for data analysis and experimentation. Moreover, this advanced spectrophotometer is accompanied by a range of accessories, enhancing its usability and making it a convenient choice for all users.



Key Features:

-       Enhanced Precision: The utilization of a lead screw structure significantly enhances the accuracy and resolution of wavelength measurements, ensuring improved data precision.

-       Safety Assurance: A robust 8mm aluminum base serves as the optical mount, providing stability and ensuring safety during operation.

-       Long-lasting Lamp: Incorporating reference beam technology, the Ubi-490 minimizes the need for frequent and costly lamp replacements. The Deuterium lamp and halogen lamp can be switched on/off as required.

-       Quartz Overcoating: To safeguard the high-precision optical components against contaminants, a quartz coating treatment is applied, significantly extending the product's lifespan.

-       Intuitive User Interface: The user interface is designed to be intuitive, offering easy and convenient options for configuring each measurement mode, facilitating efficient experimentation.

-       Versatile Applications: With a wide range of applications available, the Ubi-490 caters to diverse user needs, including water quality analysis and pesticide residue analysis.

-       Data Expansion: Data can be conveniently exported to a PC or printer via USB or parallel port connections, enabling seamless data transfer and further analysis.

-      Voltage Flexibility: Even in situations with unstable power supply, the Ubi-490 maintains stable analysis results without the need for an additional transformer or voltage stabilizer, thanks to its free voltage capability.

-      Enhanced Energy Efficiency: Compared to similar products on the market, the Ubi-490 optimizes power consumption by minimizing standby power usage after lamp and motor operations, thus increasing energy efficiency.

-      Compact Design: With its compact size, the Ubi-490 maximizes laboratory space efficiency, providing a smaller footprint while delivering powerful performance.

Optional Accessories:

-       Automatic 8-Cell Holder: Simultaneously Measure up to 8 Samples.

-       Micro Volume Cell Holder: Designed for Measuring Samples with Volumes of 500µl or Less.

-       Film Cell Holder: Ideal for Measuring Light-Transmitting Solid-State Samples like Optical Films or Slide Glasses.


Software features:

-       Photometry: Measure Absorbance (Abs), Transmittance (%T), and Concentration using a Standard Curve at a Specific Wavelength

-       Kinetics: Monitor Changes in Absorbance (Abs) or Transmittance (%T) Over Time

-       Wavelength Scan: Measure Absorbance (Abs) or Transmittance (%T) Changes within a Specified Wavelength Range and Interval

-       Multi Wavelength: Simultaneously Measure Multiple Wavelengths

-       Water Quality Analysis: Determine the Concentration of Specific Water Quality Parameters using the Integrated Standard Curve

-       Pesticide Residue Analysis: Analyze Inhibition Rate of Samples using One-Point, Two-Point, or Kinetic Methods

-       Test Tube Holder: Facilitate Analysis Using Test Tubes, Particularly for Water Quality Analysis

Product Specification


Wavelength Range

190 - 1100nm



Wavelength Accuracy


Wavelength Reproducibility


Photometric Accuracy


Photometric Repeatability


Photometric Display Range

0-200%T, -0.3-3.0A



Stray Light

0.05%T@200nm, 360nm

Data Output Port



Deuterium Lamp &Tungsten Halogen Lamp


Silicon Photodiode

Power Requirement

220V / 50 Hz

Dimension (L x W x H)

450 x 380 x 180mm



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