Product: Mass Flow Sensors for GC, HPLC
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Flow Sensors for GC, HPLC
For more than 30 years, thermal mass flow measurements using coils
around steel capillaries have been the standard in the precise measurement
and dosing of mass flow rates.
Now CMOSens technology from Sensirion AG (Zurich, Switzerland) integrates
this basic physical measuring principle in an extremely fast, miniaturized
thermal sensor with all of the high-precision signal-conditioning circuitry
on a single CMOS (complementary metal oxide semiconductor) microchip.
For liquid mass flow measurement in LC applications, lab-on-a-chip
systems and liquid handling, CMOSens microchips can be placed in the
position of being able to detect flow rates in the range of a few microliters
or nanoliters per minute. Mounted on the outside of fused silica, PEEK,
or steel capillaries, the highly sensitive CMOSens microchips detect
the flow through the tubing material and a simple straight capillary
forms the flow path. Further, by using this technology, great repeatability
for analysesthe most important criterion in HPLCis ensured. It
works totally media isolated and with minimized inner volume, so the
reliable monitoring of the process is guaranteed.
The fused silica-based, fully digital, calibrated, and temperature-compensated
liquid flow sensor SLG1430 works with a repeatability greater than
0.8% of the measured value and achieves a fast response time of <50
ms. Moreover, the device offers resolutions of 0.5 nL/min and better.
It is equipped with microfluidic connectors for OD360 capillaries and
a digital RS232 interface. Ultra-fast response times in the millisecond
range help users to monitor effects in their systems that they have
not previously been able to observe.
Sensirion AG 248
Separation System.The CARR
Powerfuge Pilot benchtop separation system expedites challenging liquid/solid
separations before full process scale-up in the biotechnology, pharmaceutical,
and specialty-chemical industries. Flow rates from 0.1 to 4 L/min and
RCFs from 500 to 20,000 x g accommodate specific applications
such as fermentation, vaccine production, plasma fractionation, and
cell debris clarification.
Kendro Laboratory Products 230
has introduced Nano-ADAMANT plates, which feature a new organic binder
system for a harder silica layer. Because of very high abrasion resistance,
the formation of dust on the surface of the ADAMANT is minimized. The
plate can be easily marked (e.g., with a lead pencil) for clear identification.
Abrasion resistance prevents undesired changes or damage to the layer
(thickness) during transportation and/or in handling.
HPLC Autosamplers.The Shimadzu
SIL-10AF autosampler directly replaces the SIL-10A and includes a fast
injection pretreatment routine that reduces sampling time by 30% with
no loss of precision. The SIL-10AP is the prep version and comes standard
with a 5-mL syringe and sample loop for large-volume injections.
Shimadzu Scientific Instruments 232
Gas Generator.The model N2-15
is a self-contained membrane nitrogen generator that produces 99% pure
nitrogen with pressures up to 100 psig. High- and low-pressure compressors
filtered by high-efficiency coalescing filters remove all contaminants
down to 0.01 µm. Hollow fiber membranes subsequently separate the clean
air into a concentrated nitrogen stream and oxygen-enriched permeate
stream, which is vented from the system.
Parker Balston 233
Mixer Mill.Retsch introduces
the MM 301, a model particularly suited for dry and wet grinding of
small quantities, as well as mixing and homogenizing powders and suspensions.
The MM 301 features a quick-action clamp on the grinding jar, which
ensures easy handling and optimizes reproducibility of the sample preparations.
Retsch, Inc. 234
Corp. has released v6.01 of its scientific data management system (SDMS).
Important new features have been added to enhance support for users
of Apple Macintosh computers running Mac OSX 10.2.5. Along with the
ability to restore raw data files from a Macintosh, report summaries
and other “human-readable” data can now be viewed in SDMS.
NuGenesis Technologies 235
Balances.The Ohaus Analytical
Plus models feature a lockout switch to safeguard the user’s pre-set
parameters and motorized internal calibration at the touch of a button.
These balances also offer 11 weighing modes to meet a variety of applications
needs; full GLP protocol for users involved with quality systems like
ISO 9001; and an RS232 bidirectional interface to facilitate easy integration
GC Ovens.By heating only the
GC columns rather than the surrounding air and oven walls, Antek’s
3600 Series Microwave GC column oven provides 6 °C/sec heating and
over 240 °C/min cooling rates, to speed every analysis. The Dual-Oven
Microwave GC (Model 3602) converts an existing one-analysis-at-a-time
GC into a simultaneous dual analyzer that can use concurrent yet different
temperature pro grams, doubling GC capability.
Antek Instruments 237
Thermo Prep Ovens.Models Büchi
B-540 and Automatic B-545 provide temperature ranges from ambient to
400 °C. Both ovens can provide simultaneous melting point determinations
of two boiling samples or three melting points and are equipped with
viewing chambers for visual determinations.
Brinkmann Instruments 238
Chillers.Upgraded midsize industrial
chillers are available in various sizes, configurations, and capacities.
These handy rugged chillers provide convenience and can be equipped
with shutoff valves, tank level indicators, and flow meters. They provide
cooling for plastic molding equipment, lasers, printers and electronics,
and other process equipment.
Gas Purifiers.The Valco helium
purifier provides point-of-use gas purification of helium or other
noble gases, such as Ar, Ne, Kr, and Xe, to sub-ppm levels of reactive
gaseous impurities. The nitrogen purifier does the same for nitrogen.
The gas purification substrate in Valco gas purifiers is a non-evaporable
heat-activated gettering alloy, in a welded assembly for safety.
Valco Instruments 240
Mixers.These modular units
can be customized to almost any size. Containing a high-torque stepping
motor for precise control for demanding applications, the high- or
low-speed mixing (orbital) assists in obtaining repeatable mixing results.
Some applications include process development and combinatorial chemistry.
Mixer is controlled through a PC with Glas-Col’s Labnetix software
or with the aid of a virtual instrument for Labview.
Circulator.The Huber Unistat
169W offers an operating temperature range of -60 to 200 °C with increased
cooling of 40 kW at -40 °C. The 169W is hydraulically sealed to provide
temperature control for a variety of processes and applications. Its
low fluid volume and high cooling power density provide fast rates
with less power.
Caron Products 242
Analyzer.The Pegasus 4D with
advanced ChromaTOF 2.0 software fully integrates four dimensions
of problem-solving capabilities to deliver better information from
the most challenging chromatographic analyses. It combines the chromatographic
resolving power of GCxGC separations and the analytical resolving power
of the Pegasus III GC-TOFMS. The automated Peak Find and Mass Spectral
Deconvolution algorithms of ChromaTOF simplify GCxGC data collection
LECO Corp. 243
Epsilon 5 is an energy-dispersive X-ray fluorescence (EDXRF) spectrometer
for low-level detection of heavy elements. It detects elements from
sodium to uranium in solid, pressed-powder, granule, liquid, thin-film,
and loose material samples. Measurements can be performed in a vacuum
or helium atmosphere.
X-ray Optics System.The Rigaku
HomeLab LightSource is designed to approach the intensity of
a synchrotron bending magnet beamline in a “home lab” environment.
Combining Osmic, Inc.’s VariMax optics with the Rigaku FR-E X-ray generator,
this system has more than twice the usable X-ray flux of previous generation
CMF/FR-E systems, and also features an adjustable beam for resolving
cell lengths in excess of 450Å.
is dedicated to the surface, depth profile, and bulk analysis of almost
any material or coating—conductive or nonconductive. It can simultaneously
analyze up to 64 elements including the gases H, O, N, and Cl. It features
the highest optical resolution available with a 1-m polychromator and
an optional 1-m monochromator.
JY Horiba 246
Elemental Analyzer.The Multi
EA 3100 model achieves detection limits of 10 ppb for sulfur determination
by UV fluorescence and 50 ppb for nitrogen determination by chemiluminescence.
With luminescence methods, there is no interference between sulfur
and nitrogen in case of low sulfur and high nitrogen contents. The
detection limit for chlorine determination is 100 ppb.
Analytik Jena 247
Counting Scales.The DIGI DC-200/300
Series counting scales provide precision and accuracy for stockroom
inventory, receiving parts verification, parts scanning, and counting
and labeling applications. With three RS-232 interfaces and Ethernet
connectivity, the DC-200/300 Series allows users to transfer information
to a database for real-time inventory and eliminate handwritten errors.
Rice Lake Weighing Systems 249
Detector.ESA’s Chromachem Evaporative
Light Scattering Detector (ELSD) for use with HPLC provides universal
detection of nonvolatile compounds. The modular ELSD features higher
peak resolution, a sophisticated microprocessor, small footprint, RS232
interface, and a larger graphic display with more information.
ESA, Inc. 250
calibrations are provided for resistance-type measuring devices like
liquid gas thermometers and thermistors. Fixed-point primary calibrations
and secondary calibrations can be performed for less accurate temperature
devices. Calibrations can be tailored to customers’ specifications
from -196 to 700 °C in an ISO/IEC 17025-compliant setting.
Evaporator.The Zipvap 18 provides
sample preparation by nitrogen evaporating or concentrating 118
samples sized from <1 mL to 100 mL. It has a swing-up-and-away manifold
that is also height adjustable. It comes with individual fine-needle
valve flow control for each of the 18 positions and includes a triple
Zanntek Scientific 252
ICP Chamber.Glass Expansion
has developed the Helix user-friendly nebulizer fitting. Helix’s main
features are: no more tedious o-ring replacement; totally inert interior
surface; smooth nebulizer insertion and removal; special release/lock
mechanism to seal the chamber; and positive stop to ensure correct
Glass Expansion, Inc. 253
Strip Chart Recorder.The DACS
Digital Strip Chart Recorder is a scaled-down version of the GOW-MAC
DACS Chromatography Data Handling Software. This device provides the
same information as conventionally larger models, including peak area,
retention times, and chromatogram without having to perform a calibration.
Displays signals in real-time and via ACSII connection data that can
be imported and exported for processing.
Imaging System.PRISm is a portable
imaging system that provides hyperspectral imaging that is ideal for
in vivo Raman imaging for medical applications such as surgery and
dermatology, as well as other demanding applications, including HTS.
It can also be used in process Raman applications to monitor numerous
reaction control points simultaneously.
JY Horiba 255
Analyzers.The Konelab series
provides complete automated analysis of routine wet chemistry/photometric
tests of water and wastewater samples. Up to 84 samples, plus six STAT
samples, can be loaded into the analyzer without interrupting ongoing
analysis. With no stabilization time or pump tubes to change, up to
600 tests can be completed without any intervention from the analyst.
EST Analytical 256
Monochromator.The TEEM system
has been developed to detect sub-ppb levels of explosives, environmental
contaminants, compounds associated with chemical warfare agents, and
bacterial spores. Using a patented ionization technique, it will eliminate
spectral interferences, clearly illuminating minute traces of specific
compounds in samples of dirt, packing foam, and other substances. It
also forms negative ions without using a moderating gas and produces
an electron beam with an electron energy that can be adjusted from
0 to 25 eV.
Distillation System.The Midi-Vap
2000 supports semiautomatic colorimetry methods for drinking, surface,
saline, and domestic and industrial wastewaters, using up to 10 economically
sized samples. The units meet EPA/600/R-93/100 methods for the determination
of inorganic substances in environmental samples and are available
in three complete component assemblies to process water samples for
ammonia, cyanide, and phenols, or in a combination assembly that permits
processing of all three.
Kimble Kontes 258
Columns.These packed single-use
Chroma bond columns are designed for automated systems and upscaling
procedures. They include alternative Chromabond flash cartridges for
the automation systems of Jones Chromatography/IST, ISCO, Biotage,
and Gilson. The selection of column systems, sorbent weights, and stationary
phases results in a great deal of flexibility in process development
Data System.Atlas 2002 R2 includes
a series of features to offer easy retrieval and reprocessing capabilities
for chromatographic data from other CDSs previously archived in a normalized
data format, improved instrument management and control, and enhanced
file security. It supports the import of CDS data previously exported
and stored in the generalized analytical markup language (GAML) format.
It also allows the importation of an entire Atlas workbook as a GAML
file, including raw data, processed data and results, methods, reports,
calibration details, the audit trail for reprocessing, and further
reporting and subsequent re-archival.
Thermo Electron 260
Evaporators.These rotary evaporators
are available with vertical or diagonal condensers, and each features
a stirred heating bath, an ergonomic stand for easy raising and lowering,
a rotary drive motor, and a full set of glassware. The rotovaps were
engineered for the highest safety requirements and operational flexibility.
With numerous glassware attachments available, the units can accommodate
a wide variety of applications.
IKA Works 261
Data System.The CLASS-VP v7.2
client/server chromatography data system has built-in features to ensure
compliance with 21 CFR Part 11 requirements. Enhancements include
a signing authority hierarchy to enforce proper application of electronic
signatures and optional comments for e-signatures, thin client interaction
to simplify validation of large software deployments, and activity
logs and audit trails. It supports a wide range of HPLC and GC systems,
including digitally configured injection and detector modules.
Sample Prep.The Captiva starter kit for plasma protein precipitation
and filtration is available from Varian. Each kit contains a vacuum
collar, filtration plates, 96-well plate seals, collection plates,
and collection plate covers that can be pierced.
Flask.The MantaRay is a single-use,
disposable, pre-sterilized spinner flask for cell cultures that is
designed to be a cost-effective alternative to glass spinner flasks.
It consists of a freestanding plastic container with a fill cap and
sealed ports for pumps or injectors. It has a working volume range
of 0.41 L. It also includes an integral stirring mechanism, which
is designed to efficiently mix at low speeds while avoiding damage
to fragile cells.
Wheaton Science 264
Software.This control software
is used for a range of centrifugal evaporators that have an “Auto Stop
When Dry” function that provides significant productivity savings by
enabling the solvent removal system to determine automatically when
the last samples are dry.
Scale.Standard features on
these precision lab balances include autocalibration, a 17-mm-high
LCD, a weight below hook, stainless steel pans, programmable auto shutoff,
a security bracket, a stability indicator, and a low-battery indicator.
It is a 120 V, AC and includes a 50/60-Hz adapter. The scale measures
6 x 2.4 x 8 in.
Thermal Analysis.HyperDSC is
a thermal analysis method for material characterization that delivers
sensitivity and insight into materials processes that cannot be obtained
with differential scanning calorimetry methods. It provides sample
information within seconds, significantly increasing throughput in
the polymer and pharmaceutical industries. It is an ideal method for
the polymer, pharmaceutical, life sciences, and forensics industries
in applications ranging from polymorphism to thermal screening of enzymes
to high-throughput screening and characterization of microgram quantities
Trace Analysis.This PC-controlled
system for trace metal analysis optimizes voltammetry measurements
through mechanical stability and signal-to-noise ratio software capabilities.
The Model 757 is suited for both simple routine and research analyses
and for running numerous current-measuring techniques with automatic
options. Evaluation and calibration can be achieved by standard addition
or calibration curve, either manually or automatically.
for multiscale, data acquisition, batching, and industrial automation
applications, the 920i programmable indicator/controller features a
large LCD screen that can be custom-configured with weight character
sizes up to 1.2 in., active bar graphs, status messages and ions, operator
prompts, and multiple soft-key functions. The 920i allows up to 4 scale
displays with legal-for-trade information, or up to 32 weight-only
displays that can include individual scales and any combination of
Rice Labs 269
Troughs.These 8- and 12-channel
reservoir troughs are designed to minimize dead volume while adding
standards, wash rinses, or reagents in high-throughput cleanups. The
V-bottom design has a 200-µL residual volume. The 8-channel trough
is made from high-impact polystyrene and has a 17-mL capacity
per channel. The 12-channel trough is made from clear PETG and has
a 13-mL capacity per channel.
Bio Tech Solutions 270
Reagents.The Mpak Reagent package
is a closed-system delivery technology that prevents contamination
while it simplifies analytical testing. The premixed custom reagents
are sealed in a flexible ultrapure bag.
Metrohm Peak 271
Circulators.More than 100 different
refrigerated and/or heating baths/circulators are available that feature
active cooling at any selected temperature and work at a variety of
voltages without a loss in overall performance. There is a 2-year warranty
on parts and labor.
Moisture Analyzer.The compact
Sartorius MA45 will perform most moisture analyses in >15 min instead
of the hours typical with oven-drying methods. The analyzer features
a design that is specifically engineered for food, pharmaceutical,
and chemical applications, with a special version available that meets
the requirements of the FDA and HACCP protocols. It offers a manually
adjustable, semiautomatic mode in addition to the timer mode and a
fully automatic mode of end-point determination.
Catalog.The SGE Analytical
Science catalog includes a comprehensive range of syringes, tubing,
GC, LC, and MS products such as capillary LC columns and accessories,
metal ferrules for GC-MS systems, and electron multipliers. Handy trouble-shooting
tips and maintenance guides are also included. For a free copy, call
800-945-6154, e-mail email@example.com,
or visit www.sge.com.
Demo CD.Leeman Labs’ demonstration
CD showcases its inductively coupled plasma optical emission spectrometry,
the Prodigy High Dispersion ICP. Prodigy incorporates a large-format,
programmable array detector (L-PAD) and an advanced high-dispersion
Echelle spectrometer. The CD allows anyone in the market for an ICP
to “test drive” the Prodigy.
Leeman Labs 275