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VIS Spectrophotometer


Model: VIS-300

HOLMARC BioLAB series VIS spectrophotometer is a high-performance, reliable, and exceptional value instrument. Unlike other entry level spectrophotometers, it employs classic Czerny - Turner monochromator design, normally available only with advanced models, which ensures low stray light. Micro-stepping drive simplifies the mechanical complexity, reduces maintenance and improves longevity. 1200 lines/mm blazed holographic grating is used as the dispersion element providing high wavelength resolution. It also employs a sigma delta ADC of 16 bit resolution for photometric measurements, a resolution higher than most of the spectrophotometers available in this price range. Large LCD and friendly interface make the operation extremely easy. It is used to plot absorbance v/s wavelength graph. The data can then be analyzed for peaks and valleys. These models also feature PC control functions based on Holmarc ‘s Spectra PhotoANALYTE software which allows users for photometric measurements, spectrum scanning, quantitative determination,data processing etc.

Photometric mode measures the absorbance or transmittance at a single wavelength or at multiple wavelengths. Spectrum mode obtains sample spectra using wavelength scanning. Changes in the sample can be tracked using repeated scans. Quantitation mode generates a calibration curve from standard samples and uses it to calculate the concentrations of unknown samples. Kinetics mode measures the change in absorbance as a function of time and thereby obtains enzymatic activity values. Time scan mode measures the change in absorbance, transmittance or energy as a function of time.

System Features

    Compact Design.

    Large LCD and friendly interface make the operation extremely easy.

    Precise measurements over a wide photometric range.

    Step scan function provides reliable peak assignment of samples with sharp or narrow absorption peaks.

    User-friendly graphical interfaces.

    Excellent signal-to-noise ratio for the entire UV to NIR spectral range.

Spectra Photo ANALYTE

Powerful Software designed for Photometry

    Spectrum scanning

    Photometric measurement

    Quantitative determination

    Powerful data processing abilities

    Printing report

    Model BioLAB VIS 300
    Bandwidth 2 nm
    Optical System C-T monochromator, 1200 l/mm holographic grating
    Wavelength Range 350 ~ 1100 nm
    Photometric Method Transmittance, Absorbance, Concentration
    Wavelength Accuracy ± 0.8 nm
    Wavelength Repeatability ± 0.2 nm
    Absorbance Range -2 ~ 2Abs
    Photometric Accuracy ± 0.002A (0 ~ 0.5A), ± 0.004A (0.5 ~ 1A), ± 0.3% T
    Photometric Repeatability ≤ 0.001A (0 ~ 0.5A), ≤ 0.002A (0.5 ~ 1A), ± 0.1% T
    Stray Light ≤ 0.05% T
    Baseline Straightness ± 0.002A
    Detector Si - Photodiode
    Light Source Quartz Halogen Lamp
    Cell Holder Two-position 10 mm standard cuvette holder
    Display 320 × 240 pixel graphic LCD
    Control Mode Stand alone or PC control
    Dimensions (L x W x H) mm 310 x 235 x 108

Scanning range between 350 - 1100nm

Selectable scan Wavelength Interval of 1 to 50nm

Live absorbance plot during scanning

Plot browser to read absorbance values at each wavelength

Analyzer to find out absorbance and wavelength of peaks and valleys

Glass, quartz cuvettes and Holders

Custom Glass Cuvettes

We manufacture quartz cells and cuvettes of custom specifications for spectrometer, spectrophotometer, colorimeter and other instruments.

Cuvette holder

The cuvette holder unit is manufactured for various cuvette sizes and applications. Some cuvette holders are equipped with SMA fiber connector sand collimators.

We hold expertise in designing and manufacturing custom models. Wide variety of accessories (optional) such as test tube holder, long path cuvettes holder and multiple cell holder can be included in one BioLab VIS300 model depending upon the varying application needs of the customer.

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