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Theta 2 Theta Advanced Spectrophotometer Print
SPA216 Series

The need for reliable measurement techniques for optical characterisation of thin films is growing. HOLMARC Theta 2 Theta Spectrophotometer is useful tool for characterizing the absorption, transmission, and reflectivity of a variety of scientifically important materials, such as pigments, coatings, windows, and filters. Automated theta 2 theta goniometer tool is used for variable angle spectroscopy, measuring absolute reflectance and transmittance of samples at different angles for characterization of the optical or electronic properties of materials. Reflectance measurements can measure the color of a sample, or examine differences between objects for sorting or quality control.

SPA216 Series spectrophotometer gives precise measurement of spectral parameters such as reflection, transmission, and optical density in all spectral range of UV, VIS and NIR. Spectral transmission and 0 reflection measurements at any desired angle with a resolution of 0.5 can be carried out with this spectrophotometer. Two models are available for angular photometric measurements HO-SPA-1990P & HO-SPA-3411D. HO-SPA-1990P is a scientific grade photometer equipped with a high sensitive photo multiplier tube. While Model : HO-SPA-3411D uses Si Photo diode as detector. Angles for illumination and measurement can be set independently. The system has provision to add motorized polarizer and analyzer to get the polarization curve of the sample at various angles.
The instrument employs classic Czerny - Turner monochromator design, which ensures low stray light. It uses 1200 lines/mm blazed holographic grating as the dispersion element which provides high wavelength resolution. It also employs a sigma delta ADC of 16 bit resolution for photometric measurements. Customized accessories are available to address individual application requirements.
SPA216 Series Spectrophotometer
Optimised design for optical characterization
Ideal for reflectance, transmission, absorption
    and optical density measurements.
Design optimized for low stray light.
Interchangeable holders for solid, liquid
    and thin film samples.
Wide range of accessories such as polarizers,
    filters etc
The software developed for this instrument has facilities for setting up and calibration in addition to scanning and manual readout. Scanning is possible for a desired wavelength range too. This feature can save time whenever full wavelength range scan is not necessary. The software saves and displays the data acquired on MS Excel sheet. This helps to plot graph with ease whenever required.
Spectra PhotoANALYTE
Powerful Software designed for Photometry
Spectrum scanning
Photometric measurement
Kinetic measurement
Quantitative determination
Multi component analyses
Powerful data processing abilities
Printing report
A variety of accessories are included such as test tube holder, temperature control holder, long path length cuvette holder and multiple cell holder to enhance different application needs. Please contact us.
Model HO-SPA-3411D HO-SPA-1990P
Bandwidth 1 nm 0.5 nm
Optical System C-T monochromator, 1200 l/mm holographic grating
Wavelength Range 340 ~ 1100 nm 190 ~ 900 nm
Photometric Method Transmittance, Absorbance, Concentration
Wavelength Accuracy ± 0.5 nm
Wavelength Repeatability ± 0.1 nm
Absorbance Range -3 ~ 3Abs
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 PMT
Light Source Quartz Halogen Lamp Xenon Arc Lamp
Cell Holder Two-position 10mm standard cuvette holder
Theta 2 Theta Measurements Goniometer for Angular Measurements
Type : Theta 2 Theta Measuring Stage
Sample Holder : Up to 50 x 50mm size, Custom Size Available
Angular Measurement Range : 30° - 180°
Positioning Resolution : 0.5°
Control Mode PC control (Software : PhotoANALYTE-G)
Dimensions (L x W x H) mm 606 x 352 x 135 606 x 352 x 230
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