 CUV-ALL-UV 4-way Cuvette Holder for 1-cm Cuvettes
The CUV-ALL-UV 4-way Cuvette Holder for
1-cm path length cuvettes is equipped with fiber optic couplings at each
of four quartz f/2 collimating lenses, which couple to
optical fibers to either read or illuminate the sample. When used with
Ocean Optics modular spectrometers and light sources, CUV-ALL-UV Cuvette
Holders can measure absorbance, fluorescence, scattering or any
combination of these optical phenomena.The CUV-ALL-UV collimators are optimized
for measurements from 200 nm-2 µm. The lenses can be used for
"straight-through" measurements, as well as for scattering or
fluorescence measurements. (In some instances, you may wish to adjust
the collimating lenses for precise positioning of the fiber at the
lens focal point.)
The CUV-ALL-UV is $935.
The CUV-ALL-UV Cuvette Holder accepts 1-cm
cuvettes; adjustable spring-loaded pistons hold the cuvette against two
reference surfaces. The assembly also has a built-in ¼" filter slot,
which is especially convenient for tailoring (with bandpass filters)
excitation wavelengths in fluorescence measurements. For
more on filter options for fluorescence applications, click here.
In addition, for
temperature stabilization, the cuvette holder's base plate has internal
channels that can connect to a circulating, constant-temperature water
source.
"Z" Dimension
Cuvettes and cuvette holders offered by Ocean
Optics have a "Z" dimension of 15 mm. Only the
qpod has a Z dimension of 8.5 mm.
Varied Positioning Options
The CUV-ALL-UV offers several options: Position two collimators for
absorbance/transmission measurements of one sample. Or, you can position
two collimators at 90° for fluorescence measurements. Or, position two pairs
of collimators for simultaneous absorbance/transmission and
fluorescence measurements of the same sample. You can even unscrew
the collimating lenses from the holder assembly and use them separately,
in any fixture for applications requiring a fiber for free-beam coupling.
User's Tip
To
increase signal collection for fluorescence measurements, add a pair of
74-MSP Mirrored Screw Plugs. These 0.3" (7.5 mm) UV-enhanced
aluminum-coated reflection mirrors connect to the CUV-ALL-UV to provide
optimal signal reflection. One mirrored screw plug collects the
fluorescence that would otherwise be lost; the second screw plug works to
reflect the excitation energy back through the sample. Each 74-MSP is $115.
User's
Tip No. 2
Now available are disposable UV cuvettes. A pack of 100
disposable CVD-UV1S
cuvettes for 1-cm path length cuvette holders is just $75. The
CVD-UV1S has a transmission range of 220-900 nm.
Specifications
|
Pathlength: |
1 cm |
|
Collimating lenses (UV-VIS-NIR): |
»
(4) Quartz lenses
optimized from 200 nm-2 µm
»
5 mm diameter
»
f/2 |
|
Collimating lens
termination: |
SMA 905 |
|
Fluorescence option: |
Position 2 collimators
at 90° |
|
Filter slot: |
Accepts filters up to
¼" (6 mm) in thickness |
|
Base material: |
Aluminum |
|
Connections in base: |
Water inlet/outlet, extra connection |
|
Water input fittings: |
1/8" NPT pipe
thread |
|
Recommended optical
fibers**: |
200
µm illumination fiber; 50
µm read fiber |
|
Size of light beam
reaching sample: |
~5
µm (circular) |
|
Distance from center of
lens to sample: |
~0.575" |
** There is no single
combination of optical fibers that will satisfy the requirements of every
application. As a rule, however, it is best to use a large-diameter
(>50 µm) illumination fiber to get maximum light throughput and a
small-diameter (<50 µm) read fiber to achieve the best optical
resolution.
|
