 |
Sample
and sample cell
Selection of an
appropriate sample cell is key to the successful analysis
of your sample. WPI prides itself on innovative fibre optic sample cells optimized for a particular application.
Nutrient analysis, micro volume protein detection, trace
metal analysis, flow colorimetry and dissolution testing
are only some of the areas WPI’s cells have been
successfully used. Sample properties, volume, analyte
concentration, wavelength range and pathlength determine,
which of WPI’s unique sample cell you can use in your
research.
The table at right provides an overview of WPI’s wide
range of optical sample cells and their potential
applications.
|
Cell
|
Type
|
Sample Volume
|
Pathelength (cm)
|
Range* (nm)
|
Application
|
|
LWCC
|
Flow cell
|
2.5 µL/cm
|
2 to 500
|
200-1000
|
Nutrient analysis, trace metal detection,
colorimetrics …
|
|
UPATH
|
Multiple path flow cell
|
10 mL
|
2, 10, 50, 200
|
230-730
|
Natural water, CDOM, tank cleaning …
|
|
SPT
|
Microliter dipping probe
|
2 µL
|
1
|
230-1000
|
Protein, DNA/RNA, rhodopsin …
|
|
DipTip
|
Miniature dipping probe
|
30-50 µL
|
0.2, 0.5, 1
|
230-1000
|
Protein, DNA/RNA, rhodopsin, dissolution
|
|
MicroVette
|
Single drop injection
|
4-15 µL
|
2.3-10
|
230-1000
|
Enhanced dynamic range, Protein, DNA/RNA …
|
|
CUV-UV
CUV-UV-10
CUV-ALL
|
Cuvette holder, 2 & 4 way
|
0.2-3.5 mL
|
0.5, 1, 10
|
200-1000
|
Absorbance and fluorescence with standard
and flow cuvettes
|
|
TR600
|
High efficiency transmission probe
|
5 mL
|
0.2, 0.5, 1, 2
|
200-1000
|
Colorimetrics, standard lab use, online
analysis
|
|
TR-UV
|
Dipping probe
|
5 mL
|
0.2, 0.5, 1
|
230-1000
|
Colorimetrics, standard lab use, online
analysis
|
|
REF-UV
|
Reflectance probe
|
NA
|
NA
|
|
Scattering, reflectance analysis
|
Choosing
a Preconfigured System
WPI offers
“complete” pre-configured systems for a variety of
applications from protein analysis to flow-through
colorimetric detection in the UV-VIS-NIR spectral
region. It is to the customer’s advantage to
consider purchasing a complete system. Ordering a
pre-configured system eliminates the guesswork of
ordering parts and offers the best pricing. In
addition, each system has many hours of testing in our
research labs by WPI’s scientists.
If you are not sure that a complete system is what you
need, we recommend calling and speaking with one of
our technical product specialists. We can then
configure a customized system especially for you with
our complete line of spectroscopy products and
accessories. Select a detector based on your own
individual application. WPI offers a complete range of
CCD (silicon linear array) and PDA (photodiode array)
modules, in addition to our full-range cuvette-based TIDAS
II spectrophotometer.
Choosing the right detector will depend upon the
accessories you need, budget, and computer interface.
WPI offers an array of innovative fibre optic sampling
cells. Many are designed and protected by patents
issued to WPI. As the table above shows, customers may
choose a sensor cell based upon sample volume and
detection limits.
| System |
Detector |
Detection
Range (nm)
|
Sample Volume |
Principle Application(s) |
| TIDAS1-LWCC |
PDA |
250-730 |
2.5 µL/cm |
Nutrient analysis, trace metal detection,
water purity |
| TIDAS-QUAD |
PDA |
230-730 |
Varies |
4-channel detection system |
| TIDAS1-MV |
PDA |
230-730 |
4 - 15 µL |
Protein (DNA/RNA), micro-colorimetry |
| TIDAS1-SPT |
PDA |
230-730 |
2 µL |
Protein (DNA/RNA) |
| TIDAS1-TIP |
PDA |
230-730 |
10-30 µL |
Dissolution studies, multipurpose testing |
| TIDAS2-LWCC |
PDA |
230-730 |
2.5 µL/cm |
Low noise, high sensitivity applications,
flow systems |
| TIDAS2-SPT |
PDA |
230-1000 |
2 µL |
Lowest noise/sample volume, full-range,
multipurpose |
| UPVIS (UltraPath) |
PDA |
380-730 |
10 mL |
Open ocean (CDOM) detection, broad dynamic
range |
| UPUV (UltraPath) |
PDA |
250-730 |
10 mL |
Open ocean (CDOM) detection, broad dynamic
range |
| USB2000-LWCC-VIS |
CCD |
350-730 |
2.5 µL/cm |
Colorimetric detection. VIS system |
| SPECTRAUSB-LWCC-UV |
CCD |
250-730 |
250 µL |
Flow thru analysis with UV-VIS capability |
| SPECTRAUSB-SPT |
CCD |
230-800 |
2 µL |
Lowest volume sampling, protein, UV-VIS
multipurpose |
| SPECTRAUSB-MV |
CCD |
230-800 |
4 - 15 µL |
Microvolume, multipurpose |
| SPECTRAUSB-FLG |
CCD |
380-1050 |
1 - 3.5 mL |
Fluorescence |
| SPECTRAUSB-CUV |
CCD |
250-800 |
0.2 - 3.5 mL |
Cuvette-based sampling, multipurpose |
| S2000-MC-x |
CCD |
Custom |
Varies |
Multichannel applications. Call for
technical assistance |
|
|
français
+49
(0)30 6188845
+45 (0)36 988 355
Choosing
a System
