CD
250™
The CD 250™ is a temperature-controlled cuvette holder for circular dichroism
measurements.
| • | Rapid, precise Peltier control over a wide range of temperatures |
| • | Carriages available for common cuvette types |
| • | Variable speed magnetic stirring if needed |
| • | Equilibrated nitrogen gas purge |
| • | Optional remote computer control |
| • | Built-in windows for stable thermal control |
| • | Compact size |
| • | TC 125 temperature-controller included |
The CD 250™ is
available for the Applied Photophysics Chirascan and the Olis CD instruments
(DSM 10, DSM 17 and DSM 1000).
Description
The CD 250™ cuvette holder contains
a thermoelectric cooler (Peltier device) for controlling the temperature.
Cuvette carriages that optimally fit a variety of different cuvette
types mount into the CD 250™. A variety of cuvette carriages
are available.
For example:
a) Carriage for the Hellma 121.000 short path length CD cuvette
b) Carriage for a square (12.5 x 12.5 mm) cuvette
c) Carriage for a 10 mm path cylindrical cuvette
d) Carriage for the Olis Titrator cuvette
Other cuvette carriages can be designed on request. Windows at each side of the
cuvette carriage enclose and control the environment around the cuvette, making
it possible to precisely control the temperature of short path length cells.
Nitrogen may be passed through a heat exchanger and directed within this chamber
to speed equilibration and eliminate oxygen around the cuvette. Magnetic stirring
may be used in square cuvettes or other cuvettes with adequate volume to hold
a stir bar, thus minimizing temperature gradients in the sample.
Sample
Holder Temperature Ranges