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iTOC-CRDS Isotopic Carbon Analyzer System Brochure
?e World's Highest Performing
and Easiest to Use Analyzers
©2010 PICARRO, INC. · 480 Oakmead Parkway, Sunnyvale, CA 94085 · T 408.962.3900 · E info@picarro.com · W www.picarro.com
PICARRO CM-CRDS
Combustion Module-CRDS
Cavity Ring-Down Spectroscopy system for bulk 13C analysis significantly easier to use
and less costly than EA-IRMS
• Extends d13C isotope values to your lab in two hours or less
• Portable - easily moved from lab to factory floor or field station
• Unique combination of high-precision and ease-of-use
• Easy to use for non-technical personnel
• High throughput - 148 samples in 24 hours
• Upfront costs 2x-3x less than EA-IRMS, total continuing costs 5x-10x less
Figure and data: Analysis of five acetanilide solid samples using CM-CRDS.
d
13
C
Va
lu
e
(‰
)
Sample Replicate
S.D. = 0.075 permil
-38.38
-38.46
-38.53
-38.69
0 1 2 3
-38.61
4 5 6
Fig 1. The standard deviation of the d13C values of the five sample replicates is outstanding
Advantage Note: For the first time, high-precision, bulk
stable isotope analysis (BSIA) of 13C is push-button simple.
Meet Picarro’s CM-CRDS system – the world’s smallest
foot-print, lowest cost, fully-integrated 13C BSIA instrument.
Researchers in food science, material studies, soil and
plant studies will benefit from the unparalleled combination
of high-precision, low price, ease of use, and remarkable
flexibility. The CM-CRDS offers performance comparable
with isotope ratio mass spectrometry (IRMS) instruments.
Unlike IRMS systems, which require specialized
installation, a Picarro CM-CRDS can be installed by non-
technical personnel in 2 hours. In fact, virtually anyone
can set up and configure this compact, benchtop system
for high-precision measurements. The same CM-CRDS
instrument stack can move from the lab to the factory to the
field in a matter of hours. In contrast, IRMS systems cannot
be moved without significant expense and risk. Using
CM-CRDS researchers can “set-and-forget” by loading
a sample tray and programming the instrument to run as
many as 148 unattended samples sequentially. Best of all,
the price is right. The Picarro CM-CRDS system costs 2x-
3x less to purchase than a comparable EA-IRMS system
and costs 5x-10x to operate on an annual basis.
The CM-CRDS system consists of the Picarro G2121-i
Cavity Ring-Down Spectroscopy (CRDS) isotopic CO2
gas analyzer, the Picarro Liaison Universal Interface, and
the Picarro Combustion Module (CM). The CM generates
CO2 from the carbon in the sample and routes the gas
via the Liaison interface into the isotopic CO2 analyzer.
?e World's Highest Performing
and Easiest to Use Analyzers
©2010 PICARRO, INC. · 480 Oakmead Parkway, Sunnyvale, CA 94085 · T 408.962.3900 · E info@picarro.com · W www.picarro.com
Targeted d13C Performance
Gas Species Precision
CO2 <0.4 ‰ (0.2-0.3 ‰ typical) sample-to-sample
System Specifications
Minimum sample size 250 µgC (guaranteed precision);
400 µgC (typical precision)
Sample-to-sample analysis time 10 min
Carrier Gas N2 (UHP)
Combustion Gas O2 (UHP)
Optional Reference Gas CO2 at 3000 ppmv in N2
Carrier gas flow rate <90 ml/min of N2 at 760 Torr
Autosampler Attached Pneumatic Autosampler w/ 50-position carousel
(99 and 148 positions optional)
Power Requirements 90-120 VAC, 50/60 Hz & 220, 50 Hz
Installation / Weight / Dimensions Benchtop / 160 lbs / 38”x 29”x 23” w/ A/S
Liaison manages three processes in parallel for maximum
sample throughput. These processes are a) feeding the
CO2 collected from one sample into the CRDS, while b)
collecting the CO2 generated from a second sample into
a gas bellows, and c) purging the third bellows with N2 in
preparation for the next sample collection. The entire CM-
CRDS system can be controlled with GUI-based intuitive
software utilities installed on the Picarro analyzer. Users
can connect remotely and control the instrument through a
standard Remote Desktop connection or with similar remote
login software. Picarro guarantees the specified precision of
the CM-CRDS system by running a series of 10 pulses of
CO2 standard gas at 3000ppm in N2 and the combustion of
six solid samples of USGS40 (L-glutamic acid).
Potential uses of the CM-CRDS include food research,
soil science, ecology, marine biology, materials science,
proteomics, and many other applications. This unique
combination of ease of use, high precision, and cost
effectiveness positions the CM-CRDS to leverage Picarro’s
outstanding Isotopic CO2 Cavity Ring-Down Spectroscopy
(CRDS) technology into a plethora of novel 13C BSIA
applications that would not otherwise be possible due to
cost, time constraints, or inherent complexity of pursuing
these lines of research on IRMS systems. Most important
of all, the CM-CRDS makes stable isotope technology
accessible to an entire new class of users who are not
highly-trained
spectroscopists, nor
have sufficient time to
overcome the complexities
of the traditional IRMS
instrumentation.
About Picarro CRDS
Picarro’s unique Cavity Ring-Down Spectroscopy (CRDS)
system is a time-based measurement system that uses
a near-infrared laser to quantify spectral features of
molecules in a sample gas passed through an optical
measurement cavity. An effective path length of up to
20 kilometers inside the cavity results in exceptional
instrument precision and sensitivity. The optical cavity is
thermally controlled to ensure minimal drift, even in the
harshest environments. Precise temperature and pressure
control systems designed into the analyzer ensure accurate
measurements over long periods of time as well as allow
extremely infrequent calibration. Picarro CRDS systems all
include a patented, high-precision wavelength monitor that
makes certain the analyzer only monitors spectral features
of interest. For researchers, the CM-CRDS delivers a best-
in-class combination of flexibility, speed, high-precision,
and ease of use that sets a new standard for bulk stable
isotope analysis.
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