Holmarc’s SPA-SP300C2 Theta 2theta spectrophotometer gives precise measurements of spectral parameters such as reflection, transmission, and Absorption in all spectral range of UV, VIS and NIR. Spectral transmission and reflection measurements at any desired angle with a resolution of 0.1 nm can be carried out with this spectrophotometer. Let us discuss some features of our spectrophotometer with ‘θ - 2θ’ configuration. ‘θ' is the angle between the source and the sample. Where, 2θ is the angle between the incident beam and the detector. The incident angle θ is always half of the detector angle 2θ.In addition to the system configurations, thin film thickness from transmission mode also included in our new system.
For Angle based reflectometry, Initial Angle θ is provided for 15 - 90 degrees and correspondingly 2θ for 30-180 degrees. In Normal incidence transmission mode, we can find the transmission & absorption of colloidal solutions as well as thin film sample transmission and its thickness. For thin film thickness Fresnel equations is used here. Samples must be transparent to create thin film interference. Thickness range from 35 nm to 3500 nm we can use. Two detectors is provided here. In UV-Vis region UV enhanced Si-photon detector is provided for NIR region InGaAs photo detector is used. Automatic control and detection of lamps & sensors is controlled by software.Wavelength range | 275 - 2400 nm |
Optical system | Czerny Turner |
Wavelength resolution | 0.1 nm |
Wavelength Accuracy | ± 0.1 nm |
Transmittance range | 0 - 100 % |
Transmittance resolution | 0.1 % |
Transmittance Accuracy | ± 0.1 % |
Absorbance range | 0 - 2A |
Absorbance resolution | 0.001 A |
Reflectance range | 0 - 100 % |
Film thickness range | 35 - 3500 nm |
Concentration range | 0 to 999 |
Spectral bandwidth | 0.1 nm, 0.5 nm, 1 nm & 5 nm variable bandwidth Operation |
Detector | Si-Photodiode & InGaAs IR detector |
Source | 50W Quartz Halegon & 30W deuterium combined source |
Theta 2 theta stage | Goniometer based |
Sample holder | 20 x 50 mm size, Custom size Available |
Cuvette holder | 10 mm standard cuvette holder |
Angular measurement range | 30 - 180 degree |
Input Voltage | 230V 50Hz |
Control mode | PC control |
Specially designed 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
Spectrum Scanning
Photometric measurements
Quantitative determination
Multi component analysis
Powerful data processing abilities
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