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Instrument Database:
CHEMTECH AI LIMITED - CTA 1800/CTA1800S Series UV-Vis Spectrometer
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| Year of introduction |
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| Status |
available |
| Company |
CHEMTECH AI LIMITED
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| Categories |
Spectrometer ( Molec. ): UV/VIS
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Low Stray Light and Wide photometric range.
The high-performance blazed holographic grating reduces stray light of the instrument and widens the photometric range.
Enhanced baseline stability.
The dual beam monitoring ratio system enhances baseline stability.
Heightened resolution.
The large-diameter light path magnifies the instrument's energy, reduces noise and enhances resolution.
Automatic sequential measurement.
The automatic eight-cell sample holder carries out automatic measurement of eight samples in succession. It also features a one-touch measurement of the dissolution of six drug samples and a blank
User-friendly light source.
The socket deuterium lamp and socket tungsten lamp facilitates easy light source replacement, easy maintenance, and reduces operation error.
Convenient LCD display
Convenient display.
The large back-lit LCD displays both photometric values and spectral curves.
Enhanced service life and reliability.
The soft-touch keypad maximizes service lifetime and operational reliability.
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| Specifications |
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Optical System: X-shaped mono-chromator, with high-resolution, diffraction holographic grating.
Wavelength range 200nm ~ 1100nm
Spectral bandwidth 0.5nm, 1.0 nm, 2.0 nm and 5.0 (for CTA-1800S)
2.0 nm (for CTA-1800)
Stray light 0.3 %T (220nm NaI)
Wavelength accuracy +/-0.5 nm (automatic correction)
Wavelength
reproducibility 0.2nm
Photometric system: dual beam ratio monitoring system
Photometric method Transmittance, absorbance, energy and concentration.
Photometric range -0.3~3.0 Abs
Photometric accuracy +/-0.3%T (0~100%T), +/-0.002 Abs (0~0.5 Abs), +/-0.004 Abs (0.5~1.0 Abs)
Photometric reproducibility 0.15 %T (0~100 %T), 0.001 Abs (0~0.5 Abs), 0.002 Abs (0.5~1.0 Abs)
Baseline flatness +/-0.004 Abs (200nm~1100nm)
Baseline stability 0.002 Abs/h (500nm, after preheating)
Software: single chip system.
Photometric measurement
Measuring current wavelength transmittance or absorbance, with the capacity to make coefficient calculations according to set formula.
Spectrum scanning
Carrying out scanning of transmittance or absorbance of specified wavelengths together with peak value checkout.
Quantitative determination
Setup of standard curves and direct measurement of sample concentration.
Kinetic Measurements
Time scanning of transmittance or absorbance on 1 to 10 specified wavelengths and handling data such as peak value checkout, spectral microanalysis and spectral calculation.
Result delivery
Print out of analytical data by using the EPSON LQ series computers (to be selected at your discretion).
Mainframe: A compact spectrophotometer
Light Source Socket deuterium lamp and socket tungsten lamp
Detector A pair of silicon photodiode
Sample Chamber Eight-cell sample holder
Display LCD (320 X 240 dot matrix)
Keyboard Membrane soft-touch keypad
Printer interface A parallel printing interface (ESC/P command and EPSON-LQ compatible)
Dimensions 540mm X 400mm X 250mm
Weight 25kg
Other Requirements:
Power Source Voltage 110-230V, frequency 50-60Hz AC
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