Selection of 40 products among
46
SERIES 400 AND 400-P GAS CHROMATOGRAPHS
The GOW-MAC Series 400 and 400-P Isothermal, Thermal Conductivity Detector (TCD) Gas Chromatographs are rugged, compact, affordable, service-free GCs designed for high capability performance while
withstanding rough, student or industrial use. They meet the demands for teaching the principles of gas chromatography, chemistry and biochemistry. As of January of 2005, the Series 400 GCs has replaced our very popular Series 350 GCs.
Isothermal Operation
Detector: Thermal Conductivity Detector (TCD)
Direct On-Column Injection or Gas Sample Valve (manual or pneumatic)
Single or Dual Column
Microscale Compatible: heated, threaded exit ports (optional)
Accommodates 1/8” or ¼” o.d. metal or 6 mm glass columns
Signal Amplifier, x10 (optional)
Independent, Direct Set, Temperature Controls for Column Oven, Detector, Injection Ports
Operating temperature: ambient to 300 °C
Power: 110-220 V, 50-60 Hz
>>>
View the product on gow-mac.com
GOW-MAC«
ANALYTICAL NOVOGROM COLUMNS
ANALYTICAL NovoGROM COLUMNS – 3.0, 4.0,
and 4.6 mm i.d.
The analytical NovoGROM HPLC column system is many-fold proven. These columns can be connected to any HPLC
system either conventionally via
1/16" capillary, ferrules and screw fittings or dead volume free via the NovoGROM
Quick connectors. Standard dimensions are 3, 4 and 4.6 mm internal diameter and lengths of 2, 4, 6, 10, 12.5, 15, 20,
25 and 30 cm. Guard columns, i.e., protective precolumns, are available in the lengths of 5, 10 and 20 mm. Columns may
be filled as often as is required in the economical refill service. Use of the 3 mm i.d. column results in a reduction in the
consumption of solvent of ca. 43% or 57% compared to the 4 mm and 4.6 mm i.d. columns respectively. This not only
reduces costs, but is also active environmental protection.
All NovoGROM columns can be supplied with any of the stationary phases listed on GROM websites or in this GROMHPLC
catalogue (see pages 12/13 and 144-151). Alternatively, they may also be packed by the GROM filling service
with any stationary phase specified by the customer.
>>>
View the product on grom.de
Grom Chromatography Groupe - Grace
BROADBAND METER
The perfect solution for the monitoring / measurement of RF pollution.
The Broadband meter was designed as a general purpose electromagnetic measurement tool. It detects electric and magnetic
fields from power line frequencies up to several GHz. It is unique in its combination of a magnetic AC gaussmeter, electric field meter and RF field strength meter, all in one small package. Therefore it can be used to study and measure the magnetic fields produced by electrical power cables (including overhead lines), the fields produced by video displays, right through to the radiation emitted by microwave ovens, mobile phones and wireless LANs. Other applications include the measurement of RF environments to minimise health risks, detection of leakage from microwave ovens and detection of concealed transmitters.
Specifications
Gauss Meter: 0-3 range: 0.2 - 3 milligauss.
0-100 range: 0.3 - 100 milligauss.
Freq. range: 50 - 500Hz flat.
Accuracy: ±20 % to 50MHz
Electric field: Range: 10 V/m - 100 KV/m
Freq. range: 40 - 100KHz.
Accuracy: ±25 %
RF Field Strength: Range: 0.01 - 1 KV/m
Freq. Range: 100KHz - 2.5 GHz flat.
Indication: Analogue meter with rotary range change switch.
Power: 9V (PP3) internal Battery. Battery test reading on meter.
Size: 15 cm x 9 cm x 3 cm
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View the product on laplace.co.uk
Laplace Instruments Ltd
COLUMN HPLC - WYATT COMET™
Wyatt COMET™ (Cell Operation and Maintenance Enhancing Technology)Light scattering is the premier technique for absolute macromolecular characterization. However, it is well known that in order to
achieve the most accurate and reproducible results, one must maintain scrupulously clean optics and mobile phase. Even when the mobile phase is pre-filtered, chromatography columns continuously shed small particles that, over time, can contaminate even the cleanest optics.
This is where the Wyatt COMET™ (Cell Operation and Maintenance Enhancing Technology) concept becomes indispensable. This new device may be integrated with the flow cell manifold of a DAWN DSP, DAWN EOS, miniDAWN or miniDAWN Tristar and applies a radio frequency ultrasonic field specially tuned to the flow cell structure itself.
Unlike traditional ultrasonic cleaning methods, the field produced by the COMET device is resonant with the flow cell bore and does not produce cavitation bubbles that might damage the glass surface-nor does it form bubbles that would affect the scattering signals themselves. When used on a regular basis, the need to remove the flow cell for cleaning may be postponed indefinitely. The COMET loosens particles that may have adhered to the cell walls and removes them on a daily basis. In addition, the periodic activation of the device can prevent the adhesion of new particles. Moreover, the device operates in-situ while the mobile phase is flowing through the cell. There is no need to disconnect any fluid fittings, change solvents, or disassemble anything.
Wyatt Technology's Chief Executive Officer, Dr. Philip Wyatt noted that successful light scattering measurements come from minimizing dust and flare from the laser beam. "Up until now, our patented flow cell design has addressed these problems in three ways. First, the critical entrance and exit windows of the flow cell are located far from the scattering center to reduce the effect of contaminated windows. Second, the laser light source is focused into an extremely small beam diameter so that particulates and other contaminants on the walls are not illuminated. Third, the flow cell can be easily removed, manually cleaned, and reinstalled without perturbing the optical alignment. What has always been required, however, is an on-line method of maintaining flow cell cleanliness. That's what is so exciting about this novel device."
>>>
View the product on wyatt-europe.com
Wyatt Technology Europe
SERIES 580 RESEARCH GAS CHROMATOGRAPH
The Series 580 Gas Chromatograph sets the standard for reliable performance in a wide range of applications. So impressive has the performance of this GC been, that many 580 users refer to it as
"The Workhorse" instrument of their laboratory. The Series 580 GC can be customized to fit the exact requirements your application requires, utilizing either a TCD, FID, DID or PID detector.
Isothermal Operation
Detectors: TCD, FID, DID, or PID
Direct On-Column Injection or Gas Sample Valve: packed, capillary — split/splitless
Single or Dual Column
Accommodates 1/8” or 1/4” o.d. metal, 6 mm glass, or capillary columns
Column temperature range: ambient to 400 °C
Column oven temperature protection circuit
Readout: 3-1/2 digit LED digital display
Independent Temperature Controls for Column Oven, Detector, Injection Ports
On-line monitoring and valve manipulation by software or linking workstation
Microscale Compatible: heated, threaded exit ports, (optional — TCD only)
Signal Amplifier, x10 (TCD — optional)
Choice of standard or corrosion resistant system
Installation: bench or 19” rack mount
Power: 110-220 V, 50-60 Hz
>>>
View the product on gow-mac.com
GOW-MAC«
PARTIAL DISCHARGE MONITORING - INDIPARD® IDPS
Sensors for Online Partial Discharge Monitoring
Brief description
Active partial discharge sensors
Integrated preamplifier
Search coil for coupling without physical contact
Inductive
coupling for monitoring individual components
3-phase CapEye® amplifier for capacitive coupling electrodes
Can be retrofitted in old installations
Compact design and practically orientated assembly system
Powered and monitored by Indipard evaluation unit
Field of application and benefits
The partial discharge (PD) sensors,
together with the INDIPARD evaluation
unit, form an online monitoring system for
insulation monitoring of high-voltage and
medium-voltage installations. Continuous
monitoring of partial discharge activities
offers the opportunity of detecting a
worsening or serious change in the
condition of the insulation of the
equipment at an early point, thus giving
the user the opportunity to intervene in
good time so as to prevent more serious
damage.
Mode of operation
The PD sensors are installed in the parts
of a medium-voltage or high-voltage
installation at risk. They detect the highfrequency
electric fields generated by the
partial discharges and forward them to
the IDP16 via coaxial cable. The sensors
are active, i.e. they feature a preamplifier.
It is powered by the evaluation unit via
the coaxial cable. Depending on
application, either search coils, inductive
PD sensors, capacitive coupling
electrodes with a CapEye® amplifier or
devices with CapEye® interface may be
used.
Search coil
The search coil performs coupling
without physical contact. It must be fitted
in the electric field between high voltage
and earth. Its metal bar forms a
capacitive coupling electrode. Its range is
approx. 2 m in open installations and
approx. 1 m in enclosed installations. It is
particularly suitable for retrofitting in old
installations.
Complete installation kits are available
for specific types of installation.
Inductive PD sensor
The high-frequency current generated by
partial discharges is detected with
respect to earth with the aid of a
Rogowski coil.
Such a coil is suitable for monitoring
individual components such as a
transformer..
In this case, it must be ensured that the
section to be monitored features only one
defined earthable point and is otherwise
installed on insulated mountings.
CapEye® amplifier
The CapEye® amplifier features three
inputs for connection to capacitive
coupling electrodes such as capacitive
insulators or capacitive coupling
electrodes. The range is approx. 5 m
from the installation location in both
directions of the conductor but ends after
approx. 1 m in cable.
CapEye® amplifiers have improved
common mode rejection cabability. The
CapEye® amplifier is particularly suitable
for monitoring twin switchgear cells, in
the case of multi-tier design or in the
case of multiple separation of switchgear
cells.
Voltage test system with CapEye®
amplifier
The Capdis-Sx-C is an integrated,
capacitive voltage test system in
accordance with IEC 61243-5, either
with or without contact outputs.
It is also fitted with a CapEye® amplifier
and thus allows monitoring of the voltage
and condition of the insulation on the
same coupling electrodes.
Technical data
Connection cable to evaluation unit
Type Coaxial cable
Length up to 50 m per input
Search coil IDPS-A-F
Rated meas. range 400 pC
Antenna bar length standard 50 cm, min. 30 cm,
max. 200 cm
Installation with 2 spacers directly on an earthed
surface within the switchgear cubicle
Min. earthing clearance 2 cm
Opt. earthing clearance 4 ... 10 cm
Detection range with 4 cm earthing clearance
min. 100 cm in enclosed installations
min. 200 cm in open installations
Perm. amb. temp -20° ... 55°C in operation
-30° ... 70°C for storage
Connection F socket
and earth
>>>
View the product on may-elektronik.de
May Elektronik
SMOOTH VERSATILE AND EFFORTLESS ION CHROMATOGRAPHY
Flat, Stable Baselines coupled with High Sensitivities
The use of the newly upgraded CE 4710 Conductivity Detector, coupled with the continuously regenerated chemical carbonate suppressor columns
will provide for flat baselines, high sensitivities, gradient usage and speedy column equilibration.
Whatever your Ion Chromatography requirements, IonQuest will provide great value plus more.
Versatile
One single system will accommodate your requirements for now and the future.
There is no limitation on the choice of eluents, columns, pumps, sample pre-treatment, samples and column conditions.
Adherence to EPA methods is easily achieved.
A vast range of analytical columns can be supplied.
Exceptionally ultra-low drift
The use of high stability temperature control of the detector cell contributes towards the extremely low drift. Peace of mind will be your norm. The drift of the conductivity detector is so low, that overnight unattended runs are easily achieved when the detector is used with any of our reliable autosamplers.
High pressure mixing gradients
Using the pulse-free microprocessor controlled pumps, achieve precise control and repeatability of mobile phase mixtures, to 0.1% levels. Coupled with rapid responses to changes in concentration and lower incidences of bubbling of the mixed mobile phase, the achieved gradients are the best.
A large range of pumping volumes, with low volume pumping increments is available.
Hence method development is achieved with fewer set-backs and the developed methods are more transferable.
Additional Detector Options
In addition to the standard conductivity detector, the IonQuest can be used with other detectors, such as electrochemical, refractive index, UV/Visible, WaveQuest UV/Visible ultra-fast scanning and fluorescence. Your options will not be limited.
Analyse catecholamines in blood plasma with an electrochemical detector, whilst simultaneously analysing anions using a conductivity detector.
Detect all the organic acids in wine using the conductivity detector, whist simultaneously detecting the sugars with refractive index or electrochemical detectors.
Amino acids, metals in soil, nucleic acids, fluoride and sodium in toothpaste, sodium in foods, bromide in water.
>>>
View the product on cecilinstruments.net
Cecil Instruments
WYATTQELS (QUASI-ELASTIC-LIGHT-SCATTERING) INSTRUMENT
WyattQELS™ On-Line Quasi Elastic Light Scattering from your HPLCThe WyattQELS (Quasi-Elastic-Light-Scattering) instrument contains a real time digital correlator. The correlator measures the
autocorrelation function of the intensity signal from any one angle of the DAWN or from the 90 degree location of the miniDAWN. The correlator then calculates the hydrodynamic radius at each elution time in order to provide hydrodynamic radii over an entire chromatographic peak.
Unlike many other dynamic light scattering instruments, the WyattQELS detector, when interfaced to the DAWN, allows one to measure correlation as a function of angle. Particles larger than 150nm may scatter relatively little light at 90 degrees because of intra-particle interface or "Mie scattering".
This effect may cause significant distortion in computer particles size distribution for some kinds of polydisperse samples. Since the WyattQELS optical fiber can be moved easily to any one of the 18 DAWN angles, the measurements can be optimized for the best results for particles that are very large. With most other instruments, which only make measurements at 90 degrees, if large particles are present, the signals may be low or lost altogether. But with the WyattQELS you can always move the optical fiber to a lower or a higher angle.
WyattQELS Features include:
Multiple Tau correlation design with a fixed range of channel from 480 nsec to ~1 hour (real-time).
No sample time optimization required!
A total of 264 channels with input data format of 5 bit for the first 16 channels, the the sample time doubles every 8 channels and the data width is incremented 1 bit for every set of channels. No pre-scaling required.
>>>
View the product on wyatt-europe.com
Wyatt Technology Europe
PORTABLE PARTIAL DISCHARGE TESTER - INDIPORT IDC 20
Portable partial discharge tester for switchgear
Brief description
Partial discharge tests in a few minutes
without having to shutdown
Checkable and reproducible due to artificial PD source
Specially designed for medium-voltage switchgear
Utilises the coupling capacitance of the voltage testing system
Fits directly to HR interfaces or equipment and sensors
with CapEye®-Interface
Read off and/or record measured values
Long-term observations, trend recognition
Data recorded on SD memory cards
Evaluation on a PC with standard software
Light, portable and maintenance-free
Can be used without a PC
Optional: sensors to record weather data simultaneously:
pressure, temperature, humidity and dew point
Optional: sending text messages via GSM modem
Area of application
The use of partial discharge (PD) tests
on high-and medium-voltage installations
is now undisputed. Manufacturers test
their equipment before delivering it to
customers. Many customers ask for a
repeat test after assembly and before
commissioning on site. However, these
do not include the major weak points for
operators, namely the cable terminations.
Subsequent regular testing requires the
complete isolation of the installation, is
very costly and is therefore generally
dispensed with.
INDIPORT is a portable partial-discharge
measuring system. It is designed for use
during operation and does not need the
installation to be isolated. Installations
can consequently be tested at any time
and at reasonable cost. In addition to
instantaneous values, the INDIPORT can
also be used for long-term
measurements, including climate
measurements.
Method of operation
INDIPORT, with its preamplifier, uses the
existing capacitance taps on the
switchgear, such as the HR interfaces or
voltage testing systems with CapEye®
interface. Sensors in the INDIPARD
partial discharge monitoring system can
also be connected directly. The normal
operating voltage is used as the test
voltage. Pulses with a known charge are
fed in from the adjacent cell with the
IDP-SRC PD simulator, again via the
capacitance tap, and compared with the
display. This means the measurement
results are reproducible and comparable
with other stations.
Partial discharges often occur
sporadically, depending on the weather.
In order to be able to obtain any
meaningful information about the
condition of the insulation in an
installation, observation over an
extended period of time is necessary.
Consequently, the INDIPORT includes a
complete data logger for long-term data
capture in addition to the momentary
display with a phase diagram. SD or
SDHC memory cards of up to 32 GB
storage capacity can be used for data
recording.
PD measurements from different time
periods and locations can only be
compared if the most important climate
data is taken into account.
To do this, INDIPORT simultaneously
captures the partial discharge activity,
relative humidity, temperature, dew point
and air pressure at adjustable time
intervals. For evaluation, the memory
card is removed from the unit and can
then be evaluated on a PC with a card
reader and spreadsheet program.
INDIPORT can be combined with a GSM
modem. When a PD occurs, the unit calls
the service personnel by text message.
This is particularly important when
searching for and localising sporadic
PDs.
INDIPORT is supplied with its
accessories in a study plastic carrying
case.
>>>
View the product on may-elektronik.de
May Elektronik
SUPERB PERFORMANCE HPLC - ADEPT SERIES
Adept Series HPLC systems and modules offer top grade performance, are economically priced and designed for all applications including method development, quality assurance, quality control,
pharmaceutical and ion chromatography.
A revolutionary new UV-Visible Dynamic Absorbance Detector (DAD), offers all the spectral capabilities of a Photo-Diode Array Detector (PDA), with greatly improved performance when used as a variable wavelength detector (VWD).
Pumps, UV detectors and system control modules may be stacked vertically for the smallest possible space requirement or in lower profile where space permits.
State of the art design, based on 30 years of HPLC design experience, is combined with up to the minute software, designed to operate in Windows XP, but may also be used with Windows 98 and 2000. It offers the easiest possible use with full system control, spectral and data processing.
Ultra Fast Scanning Detector
Cecil Instruments introduce WaveQuest, a breakthrough in UV-Visible detector design. A true alternative to Photo Diode Array detectors.
Super fast wavelength scanning, scanning UV spectrum in 200 ms. Powerful spectral processing software for R&D, method development, purity determination etc.
Absolutely top performance as variable wavelength detector, with data processing by PowerStream software, another Cecil Instruments development.
>>>
View the product on cecilinstruments.net
Cecil Instruments
RF1000/RF2000 SYNTHESISER
RF1000 Synthesiser (30MHz - 1GHz)
RF2000 Synthesiser (30MHz - 2.4 GHz)
PC controlled RF synthesisers for immunity testing up to 2.4GHz matched to the requirements of IEC61000-4-3 and featuring
automatic scanning to pre-programmed schedules.
Simple to use via PC 'windows' control software.
USB port interface. No need for special interface cards.
Field probe input for automatic level control.
Suitable for use with any Power Amplifier and antenna / cell / chamber combination.
Standard IEC61000-4-3 tests pre-programmed.
EUT status input and prompt output.
The RF1000/RF2000 are signal sources matched to the RFI immunity requirements of IEC61000-4-3.
Features such as sine and pulsed modulation, programmable start and stop frequencies, frequency step, and dwell time are provided as standard.
These units are essentially the same except that the RF1000 covers the range 30MHz to 1000MHz and the RF2000 covers 30MHz to 2400MHz. Both include powerful Windows control software with USB port interface.
When used with the LaplaCell range of test cells, these synthesisers provide full automatic control of field level and all that is needed to provide an automated compliance test facility. Advanced features such as pre-scanning, display of EUT status against applied field level and full Windows compatibility are standard.
These synthesisers has been conceived with the practical user in mind. To make the best use of the immunity test facilities for both compliance testing and product investigations, several useful features have been developed. These include:
Powerful EUT monitoring with real time display correlated to field strength and frequency.
Sweep can be continuous or 'pause on fault' or 'stop on fault'. Additional EUT excitation output, either pulsed or continuous.
Flexible single frequency search mode. Automatic ramping of field strength and fine control of frequency.
>>>
View the product on laplace.co.uk
Laplace Instruments Ltd
GPC STANDARDS POLYCAL™
Viscotek offers a full line of GPC standards for natural and synthetic polymer applications. PolyCAL™ Standards were developed as part of our commitment to provide "Complete Solutions for GPC/SEC
Applications". PolyCAL™ Standards free GPC users from tedious standard preparation tasks by providing pre-weighed portions that are both accurate and easy to use.
Pre-Weighed and Ready to Use PolyCAL™ Universal Calibration Standards (UCS)
PolyCAL™ UCS standards consist of 6 sets of 12 individual narrow standards each. They are designed to be used for column calibrations, either conventional MW calibration with a concentration detector, or Universal Calibration with a viscometer detector.
Time efficient, no weighing and no labeling, just add solvent
Cost effective, multiple use afford less $ per calibration
Accurate, precise and flexible concentration control with bigger vials
and larger sample weights
Excellent tool for lab-to-lab standardization and cross check
One standard per vial, no resolution problems
Detail pre-printed labels for lab notebooks (good for GLP/ISO)
Broad MW range, 12 fractions provide excellent MW coverage
Available for organic (PS, polystyrene) and aqueous (PEO, Polyethylene glycol/oxide) applications
Also Available PolyCAL™ Triple Detector Standards (TDS)
PolyCAL™ TDS standards consist of 6 sets of two standards each, one narrow and one broad. They are designed to be used for calibrating detectors used in triple detection, such as light scattering, viscometers, and refractometers.
The narrow standard is particularly useful for determining detector volume offsets
and peak broadening parameters.
The broad standard is particularly useful for checking the calculations for correct
MWD (Mn, Mw, and Mz are reported) and Mark-Houwink parameters, etc.
In addition to the weight-average molecular weight Mw, the refractive index increment [dn/dc] and the intrinsic viscosity [h] are reported. These quantities can be used to calibrate, or check the calibration, of any and all three detectors. This response calibration is a must for accurate light scattering and viscometry work.
Intrinsic viscosity [h] and refractive index increment [dn/dc] reported for all common
solvents.
Other benefits regarding accuracy and convenience are similar as listed above for UCS standards.
>>>
View the product on viscotek.com
Viscotek Europe
