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UV/Visible Double Ratio Beam Spectrophotometer - DB20

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Code: #13916

Supplier: Kim Ngan Technology and Scientific Instrument Company Limited

The Halo DB-20 is a high performance double beam spectrophotometer suitable for many analytical applications that a higher level of accuracy is required.

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  • - True double beam optics ensure concurrent measurement of the sample and reference for improved stability, accuracy and reproducibility
    - Coma aberration elimination from the concave diffraction grating achieves a high resolution 1.5 nm (DB-20S : 1nm) spectral bandpass and certifi es compliance of the Halo DB-20 to the stringent European Pharmacopoeia standards.
    - Built-in and Diverse Range of Measurement Modes:
    Photometry Mode: Perform quantitative analyses in either absorbance or transmittance modes. Select from single wavelength, up to 6 different individual wavelengths, nucleic acid/protein A260/A280 ratios and set up calibration curves with up to 20 standards for concentration measurements.
    Time Scan: Perform kinetic measurements for time periods ranging from 1 minute to >27 hours. Measurement intervals are factory preset and automatically selected when the scan time is set.
    Wavelength scan: Perform a full spectral scan from 190 to 1,100nm at any of 8 incremental and preset selectable scan speeds starting from a high resolution 10nm/minute up to a swift 3,600nm /minute. Data is displayed as either numerical values or a graphical spectrum. Furthermore, perform downstream processing of data, such as peak / valley search.
    - Lamp switching is automatic and selectable from a wavelength range of 325nm to 370nm.
    - The extra large 165mm x 122mm, backlit LCD screen with adjustable brightness control displays a large array of data also in graphical format.
    - The Halo DB-20 is equipped with a GLP/ GMP feature for analyses requiring validation and auditing. Parameters such as wavelength accuracy, wavelength reproducibility, bandpass, baseline flatness, baseline stability and noise level can be all validated and the audit report printed.
    - Up to 20 operating programs and up to 10 sets of measurement data can be stored in the fl ash memory of the Halo DB-20.
    - For more advanced control, analyses and reporting, the simple slide of a switch places the Halo DB-20 under the direct control of the optional UV Detective software installed on a computer.

  • - Optics: Concave diffraction grating / Double Beam Principle
    - Wavelength Range: 190nm -1,100 nm
    - Spectral Bandwidth: 1.5 nm
    - Stray Light: ≤0.05% (220nm NaI, 340nm NaNO)
    - Wavelength Accuracy: ±0.3nm
    - Photometric Range:
    Absorbance: -3 to +3
    %T: 0% to 300%T
    Concentration: 0,000 to 9,999
    - Photometry Accuracy (Measured with NIST 930D Filter): ±0.002 Abs (0 ~ 0.5 Abs); ±0.004 Abs (0.5 ~ 1.0 Abs); ±0.008 Abs (1.0 ~ 2.0 Abs); ±0.3%T
    - Phtometry Reproducibility (Measured with NIST 930D Filter): ±0.001 Abs (0 ~ 0.5 Abs); ±0.002 Abs (0.5 ~ 1.0 Abs); ±0.004 Abs (1.0 ~ 2.0 Abs); ±0.15%T.
    - Wavelength Scan Speed: 10, 100, 200, 400, 800, 1,200, 2,400, 3,600 nm/minute
    - Baseline Stability: 0.0003 Abs/hr (500nm, after 2 hours)
    - Noise Level: 0.0003 Abs (500nm)
    - Light Source: Tungsten-Halogen and Deuterium Lamps
    - Light Source Switching: Automatic switching selectable from 325nm to 370nm
    - Detector: Silicon Photodiode
    - Display: Back-lit LCD 165(W) x 122(H) mm
    - Dimensions: 505(W) x 590(D) x 265(H) mm
    - Net Weight: 29Kg
    - Power Requirements: 110 - 220 V selectable, 50/60Hz

 

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