Double Beam Spectrophotometers for Dissolution Testing
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CE 7260 Spectrophotometer
This symmetrical double beam spectrophotometer from the Aquarius
series, with an 8 cell changer, has a 1.8nm optical bandwidth and
is ideal for dissolution measurements. Its stability of, ±0.0001
A / hour, approximately ten times better than single beam instruments,
makes it ideal for extended measurements such as sustained release
monitoring. Full cell and wavelength programming together with wavelength
scanning make the instrument ideal for dissolution applications
and may, when required, be used as a high quality scanning double
beam spectrophotometer for other applications. |
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Operation is simple following menus and prompts
displayed on the LCD screen, using the keypad to interact with the
comprehensive embedded software. Validation software is available.
Used in System 1.
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CE 9260 Spectrophotometer
This is a top performance double beam spectrophotometer from the
Super Aquarius Series. The optical system is fully symmetrical and
uses a high performance end window photomultiplier as detector.
This ensures the very best performance with minimum drift and the
best possible noise performance, particularly for low energy conditions.
Both method and spectral scan storage are provided together with
powerful software for all applications.
For top performance this is the instrument of choice. Validation
software is available. Used in System 3.
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Double Beam System
Shown here is the dissolution tester used with the CE 7260 double
beam spectrophotometer; this forms the basis from which dissolution
System 1 is formed.
The compact tester and spectrophotometer occupy only a small amount
of bench space.
The tester has 7 stirred sample vessels, the eighth position is
used for circulation of the water, heated by a 1000W element. The
system and data collection are controlled by the CE 3792 WIN DISS
software which can be installed in most available PC's.
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Sample Compartment
The sample compartment of the CE 7260 spectrophotometer is shown
with the eight cell automatic changer fitted. As shown, a reference
cell may be accommodated in the reference beam.
The instrument is fitted with a light-tight port through which
all the sampling tubes pass for connection to the flowcells.
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Automatic Cell Changer
The cell changer is shown here removed from the instrument and
fitted with its eight cell holder.
Fitting the changer to the instrument is simple and rapid, as is
fitting the flow tubes to the flow tube port. The same changer is
used with the CE 9260.
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