Applied Photophysics Ltd

Chirascan Circular Dichroism Spectrometer

Chirascan Circular Dichroism Spectrometer Chirascan - Show full image Specification

  Light source   150W Xe arc, air-cooled
150W Hg-Xe arc, air-cooled (optional) 		 
         
  Monochromator   F/7 double prism, both dispersive, both polarising  
         
  Wavelength accuracy  

±0.2 nm (170nm - 400nm)
±0.5 nm (400nm - 900nm)

 
         
  Wavelength precision  

±0.05 nm (170 - 400 nm)
±0.1 nm (400 - 800 nm)

 
         
  Wavelength resolution   0.1nm throughout range.  
         
  Bandwidth  

0 to 2nm at 160nm
0 to 4nm at 180nm
0 to >10nm at >250nm

 
         
  Wavelength range  

165nm - 1360nm.
Detector option for >900nm

 
         
  Stray light  

<5ppm at 200nm
<8ppm at 180nm

 
         
  Baseline stability   ±0.02 m o /hr  
         
  Scanning modes  

Discrete sampling step-scan
Adaptive sampling step-scan

 
         
  Scanning speeds   Dependent upon step-scan resolution approximately 500nm min-1 at 0.5nm step  
         
  Kinetic modes  

Linear timebase
Split-linear timebases
Logarithmic timebase

 
         
  Response time   Not applicable. Chirascan uses the superior method of digital oversampling which eliminates the risk of damage to data.  
         
  CD full scale   ±1500 m  
         
  CD resolution   64 bit  
         
  RMS noise  

0.03m ° at 185nm
0.02m ° at 200nm
0.025m ° at 500nm
(1nm bandwidth, no sample, 4s oversampling (integration))

 
         
  Data channels  

Internal: 2 standard; up to 16 optional.

External (standard): 6 inputs for temperature (multiplexed); 3 analogue inputs; plenty of digital I/O. 		 
         
  Accessories (optional)  

PCS.3 Single Cell Holder with Peltier Temperature Control
PCM.3 Four Position Cell Autochanger with Peltier Temperature Control
TT.3 Dual Syringe Titrator
TF.3 Total Fluorescence Detector
FP.3 Fluorescence Polarisation / Anisotropy Accessory
SM.3 Scanning Emission Monochromator
MCD.3 1T Permanent Magnet for Magnetic Circular Dichroism
FDCD Fluorescence Detected Circular Dichroism
MC.3 Multi-Channel Fluorescence
J.3 Julabo AWC-100 recirculating cooler for use with the Peltier
LD.3 Linear Dichroism Detector
ORD.3 Optical Rotary Dispersion Accessory
IR.3 Extended NIR Photomultiplier Detector
LT.3 Liquid Nitrogen Cryostat
SF.3 Stopped-flow accessory

  
         
  Detection modes  

Circular dichroism (std)
Absorbance/transmission (std)
FDCD (std)
Fluorescence (std)
Voltage (std)
Detector HV(std)
Temperature (std)
Linear dichroism (optional)
ORD (optional)
Fluorescence polarization/anisotropy (optional)

  


Chirascan Circular Dichroism Spectrometer
Chirascan Circular Dichroism Spectrometer
Chirascan Circular Dichroism Spectrometer