T8DS Double Beam UV-Vis

T8DS is a high performance double beam scanning spectrophotometer with a variable spectral bandwidth.


The Czerny-Turner Monochromator with a holographic grating keeps stray light at a minimum and offers excellent optical resolution.


The use of a photomultiplier tube as detector delivers exceptional sensitivity.


The true double-beam optical system coupled with an efficient and well proven electronic control system ensures high stability and low background noise.

Key Features

◆ Czerny-Turner Monochromator with high resolution holographic grating


◆ High performance variable (0.1, 0.2, 0.5, 1.0, 2.0, 5.0nm) spectral bandwidth


◆ High resolution, excellent performance, long term stability


◆ Additional accessories for multi-application, support the ultra-volume cuvettes


Optical system


Double beam 
Scan speedSelectable 
Wavelength range190-900 nm
Wavelength accuracy±0.3 nm
Wavelength reproducibility≤0.1 nm
Spectral bandwidth


0.1, 0.2, 0.5, 1.0, 2.0, 5.0 nm
Photometric modeTransmittance, Absorbance, Energy Concentration, all using UVWin software
Photometric range-4.0-4.0 Abs
Photometric accuracy0.002 A (0-0.5 A), 0.004 A (0.5-1 A), 0.3 %T (0-100 %T)
Photometric reproducibility0.001 A (0-0.5 A)
Photometric noise0.0004 A (500 nm, 30min warm-up)
Baseline flatness0.001 A (200-850 nm)
Baseline stability0.0008 A/h (500 nm, 0 Abs, 2hrs warm-up)
Stray light≤0.01 %T (220 nm NaI, 340 nm NaNO2)
Standard functionalityNo stand alone function
Cell holderFixed position sample and reference
Detector Photo multiplier tube
Light sourceTungsten Halogen and Deuterium arc lamps
Display No display
PrinterNot available
PC interface RS232, USB
Software supportUV Win
Power supplySwitch mode 120-230 VAC 50-60 Hz
Weight 95 lb
Dimension 21.5 x 23 x 11 in