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Spectrophotometer Print
Model No: HO-SP-3480
Holmarc HO-SP-3480 is an entry level spectrophotometer suitable for education, research and industrial applications. Unlike other entry level spectrophotometers, it employs the classic Czerny - Turner monochromator design, normally available only with advanced models, which ensures low stray light. It uses 1200 lines/mm blazed holographic grating as the dispersion element providing high wavelength resolution. It also employs a sigma delta ADC of 16 bit resolution for photometric measurement, a resolution higher than most of the spectrophotometers available in this price range. A graphics LCD screen is used to plot an absorbance v/s wavelength graph. The data can then be analyzed for peaks and valleys.
Scanning Mode Features
Wavelength range between 380 and 1100nm
Selectable ScanWavelength Interval 1 to 50nm
Live absorbance plot during scanning
Plot browser to read absorbance values at each wavelength
Analyzer to find out absorbance andwavelength of peaks and valleys
Customized accessories are available to address individual application requirements. In a spectrophotometer, the amount of light passing through the sample cell is measured by a photometer. The photometer delivers a voltage signal to a processing unit. The signal changes as the amount of light absorbed by the liquid changes. According to Beer's law, the amount of light absorbed by a medium is proportional to the concentration of the absorbing material or solute present. Thus the concentration of a colored solute in a solution can be determined in the lab by measuring the absorbance of light at a given wavelength.
 
Wavelength
Range : 380 to 1100nm
Resolution : 1 nm
Accuracy : ± 1 nm
Spectral Bandwidth : 2 nm
Transmittance
Range : 0 to 100%
Resolution : 0.1 %
Accuracy : ± 1 %
Noise Levels : < 1 %
Stability : 1% / Hr after warm-up
Absorbance
Range : 0 to 2A
Resolution : 0.001A
Readout : 320 x 240 Pixel Graphics LCD
PC Interface : RS232 (Optional)
Light Source : Tungsten Halogen Lamp 20W
Concentration
Range 0 to 999
Selectable Resolution 1, 0.1, 0.01 or 0.001
Calibration with 1 or 2 known standards
Direct factor entry
10 method memory
Spectrum
Any range between 380 and 1100nm
Selectable Scan Wavelength Interval 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
Input Voltage : 230V 50Hz
Input Power : < 50W
Double Beam Spectrophotometer
The Model HO-SP-1990X from HOLMARC is a high performance UV-VIS-NIR Spectrophotometer which combines research grade UV-VIS-NIR photometric performance with the ease operation.
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Customized accessories are available to address individual application requirements. Model HO-SP-3480 comes with 10 mm path length cuvettes. Cuvettes of smaller path lengths are available as optional accessory.

For most (99%) absorbance measurements 10 mm pathlength cuvettes are suitable. Cuvettes of shorter pathlengths allow the measurement of concentrated samples without dilution.

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