The document describes seven circular dichroism spectrometer models: 1) The Olis DSM 17 CD UV/Vis[NIR] spectrometer has the widest spectral range of 185-2600 nm and computer-controlled slit width. 2) The Olis DSM 20 CD UV/Vis[NIR] spectrometer is the smallest and most versatile, designed for diverse layouts. 3) The Olis DSM 1000 CD UV/Vis[NIR] rapid-scanning spectrometer is the only model that can rapidly scan, providing potential for novel experiments.

1. Circular Dichroism Models
Compare with the Aviv 202 and Enjoy
Superior NIR Performance.
CD1 Olis DSM 17 CD UV/Vis[NIR] spectrometer
Our model 17 is built around the classic Cary
17 UV/Vis/NIR monochromator. Of our three
CD, this one feature the (1) widest available
spectral range available span of 185 – 2600
nm (2) slit width under computer control and
(3) full use of the renown Cary prism-grating
monochromator for dual beam absorbance
and circular dichroism.
See more about this model at http://olisweb.
com/products/upgrades/cary17cd.php
Compare with the Jasco 810 and Enjoy
CD2 Greater Versatility.
Olis DSM 20 CD UV/Vis[NIR] spectrometer
The model 20 is built around the Olis
Hummingbird monochromator. Of all CDs in
the world, this is the smallest. It is (1) designed
for use in an amazing diversity in layouts (2)
furnishes brilliant light throughput and (3)
is completely approachable for students as
well as senior staff. The Hummingbird is a
subtractive double monochromator, also used
in the Olis DB 620 absorbance and Olis DM
245 and 445 fluorimeters.
See more about this model at
http://olisweb.com/products/cd/dsm20.php
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2. Circular Dichroism Models
Expectation - Exploding Rapid-Scanning
Olis DSM 1000 CD UV/Vis[NIR] rapid-
CD3
scanning CD spectrometer
The model 1000 is built around a DeSa
monochromator, the only rapid-scanning
monochromator in the world. Like the model
20, the model 1000 supports maximum
modularity and endlessly diverse applications.
The F/4.5 monochromator (1) has the highest
light throughput of the three choices (2)
provides exciting potential for completely
novel experiments and (3) is the first choice
for those comfortable with higher price tags
on premium laboratory instruments. The
DeSa “RSM” is a subtractive double grating
monochromator capable of millisecond scan
rates, also used in the full Olis RSM 1000 line
for absorbance and fluorescence.
This is the only rapid-scanning CD instrument
available anywhere. Rapid-scanning is useful
for FDCD, CPL, LD, and other secondary
measurements for which an Olis DSM 1000
is configured. Rapid-scanning is possible
throughout all spectral ranges, deep UV to far
NIR. Best results presume meaningful signal
strength and a modest spectral span.
See more about this model at http://olisweb.
com/products/cd/dsm1000.php
Comparing the Three Olis CDs
http://olisweb.com/literature/pdf/cd_brochure.pdf
Spectral Spectral Spectral Dual Made
Collects Two
Range, Range, Range, Top Scan Beam Endlessly in
CD Scans Calibration
Protein Red Full Rate CD & Upgradeable the
Simultaneously
Region Shifted Available Abs USA
500- yes, through
DSM 185-800 185-
1700 40 nm/ s yes one sample no yes yes
17 nm 2500 nm
nm or two
500- yes, through
DSM 170-700 170-
1700 40 nm/ s yes one sample no yes yes
20 nm 2500 nm
nm or two
500- 230,000 yes, through
DSM 167-540 167-
1700 nm/ s or yes one sample no yes yes
1000 nm 2500 nm
nm 40 nm/ s or two
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3. Combination Models
Everything a Top Leading Laboratory Needs
C1 Olis DM 45 with Polarization Toolbox Module
to add POF, anisotropy, and CPL. Can also
support absorbance and CD in fully useful
forms for pedigarded world.
C2 Nanoparticle NIR Studies
Olis 14 UV/Vis/NIR with scanning emission
monochromator; ideal for nanotube
fluorescence in the NIR to 1650 nm
C3 Millisecond Deadtime Mixer Added to
Olis Upgraded SLM 8000
Olis USA stopped flow with custom
mounting to an Olis modernized
spectrofluorimeter
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4. Combination Models
Millisecond Absorbance and Fluorescence C4
Olis RSM 1000 with scanning emission or
(equivalently) an Olis RSM 1000F1 with dual
beam absorbance module
Millisecond Absorbance and CD
C5
Olis RSM 1000F1 with circular dichroism
or (equivalently) an Olis DSM 1000 CD with
rapid-scanning scanning emission and CPL
Circular Dichroism at Liquid
C6
Nitrogen Temperatures
Olis DSM 1000 CD with the Oxford Optistat
DN cryogenic sample holder
C7
Everything the Small Laboratory Needs!
Olis DSM 20 CD with scanning
monochromator. Fluorescence, FDCD, and
CPL complement absorbance CD
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5. DSM1000CD