The Vstar is the star of the line of vapor sorption instruments offered by Quantachrome. The Vstar vapor sorption
analyzer goes beyond water sorption to provide vapor sorption analysis using a wide variety of organic vapors at a wide range of
temperatures. Meticulous control of the manifold temperature from the vapor source to the sample eliminates the possibility of
local condensation of the adsorptive and ensures the most accurate analysis possible.
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Features - Benefits
CPQ6` Wide Vapor Compatibility:
Organics (saturated, unsaturated, and aromatic@??P,
alcohols, amines, water, and more.
CPQ6` Homogeneous Temperature:
Single thermostatically controlled manifold and
vapor source chamber.
CPQ6` Wide Range of Temperature:
Selectable manifold and vapor source temperature
from 40'sB 6C to 110'sB 6C.
CPQ6` Flexible Modular Throughput:
Choose either 2 stations for routine work or
4 stations for high throughput labs.
CPQ6` Independent Sample Temperature:
Each sample station can be maintained at a di@e?s`erent
temperature (requires multiple circulator baths@??P or
run at a common temperature (sharing a single
CPQ6` Wide Temperature Range:
Standard circulator controls the sample temperature
fro?3c20'sB 6C to 100'sB 6C with a stability o&?20.01'sB 6C *.
CPQ6` Small Thermal Gradients:
Small volume of sample jackets reduces thermal
gradients, even when sharing a single circulator for
CPQ6` Reduced Void Volume with Simultaneous
Dedicated pressure transducers on each sample
station reduce void volume and allow simultaneous
equilibration of all stations.
* According to manufacturer's specifications at circulator without load,
actual minimum sample temperature will be higher.
CPQ6` Low Pressure Operation :
Optional pressure transducers for increased precision
at low pressures are available. Optional turbomolecular
pump to allow low-pressure measurements.
CPQ6` Space Saving Design:
Reduces clutter and saves valuable bench space.
CPQ6` Vacuum Pump Protection:
Integrated cold trap prevents vapors from entering
the vacuum pump and reducing its eA0pVciency.
CPQ6` Sensitive Sample Protection:
Optional isolation valves protect sensitive or
hydroscopic samples when transferring them from the
outgasser to the analysis station.
CPQ6` Flexible Software Interface:
Powerful Windows6c#dased software provides a
Pcexible interface for setting up experiments,
controlling instrument functions, and displaying
data. A full complement of classical and modern
models for data reduction and display is included.
CPQ6` Easy Setup:
The system is supplied complete and ready for
operation. Vacuum pump, circulator, tubing,
samples cells, etc. are all included.
Novel materials are being developed in research
labs at record rates. The screening and charac -
terization of these materials is critical for iden -
tifying and developing these materials for their
target applications. The hydrophobicity of the
material as well as its aA0pVnity to other vapors can be quickly
and accurately determined using the
Vstar vapor sorption
analyzer. Unlike gravimetric systems, which are limited by
the di@e?s`usion of the adsorptive through the carrier, the
achieves equilibrium in a fraction of the time, providing results
in hours instead of days or weeks. This coupled with the ability
to perform four simultaneous analyses provides the material
scientist with an unparalleled throughput.
Optimizing the recipe of processed foods
can mean the di@e?s`erence between a successful
product that tastes good and has a long shelf
life, and an unsuccessful product that exhibits
o@e?s`-Pcavors and spoils quickly. Measurement of
vapor sorption of th0(BAxnished products and the
raw ingredients can provide valuable insight in the e@e?s`ective -
ness of various formulations.
The evaluation of pharmaceutical active ingre-
dients and excipients under various relative
humidities is routinely measured using gravi-
metric systems to simulate the actual condi-
tions of storage and use. The measurements
can be very time consuming due to the
nature of gravimetric methods. Using a vacuum-volumetric
system like the
Vstar can provide the same information in a
fraction of the time.
Building material development has gone well
beyond simple trial and error with di@e?s`erent
clay or cement formulations. Modern building
materials, whether masonry or composites, are
developed and optimized for speci!gW?c applica-
Vstar can provide the information
needed to evaluate various formulations for resistance to
water and tolerance of solvents and other organic materials.
the investigation of water vapor sorption on materials provides valuable information for material science, pharmaceutical, and
food processing applications. the
Vstar provides a fast, accurate, and reliable means of obtaining water sorption isotherms on
a wide variety of materials, but it doesn"tat stop there. the
Vstar also can measure adsorption isotherms of a variety of organic
vapors, providing insight into the materialsu?esistance to organic vapors, viability as an adsorbent for these vapors in storage
or sequestration applications, and information on the chemical properties of these materials.
Dosing manifold and vapor
source in single thermostatically
Ethernet Port for PC control via
Windows6c#dased software Interlocked door to prevent opening
Cold trap to prevent vapors from
entering the pump
Easy loading and unloading of
Software Vstar Win
All aspects of the instrument control and data acquisition are controlled via a user-friendly software package. In normal
operation the status of all valves, sensors, pumps, etc. can be viewed at a glance on the controlling PC. For diagnostic
purposes a password protected manual mode allows control of all valves, pumps, and heaters with the click of a mouse
Intuitive dialogs allow programming Pcexible degas protocols and de!gW?ning all acquisition parameters, from point selection to
analysis temperature. Prede!gW?ned protocols can be saved and used on a series of samples to ensure uniform analysis.
Acquired data can be displayed and printed or
copied into reports and other documents. Basic
data processing routines such as BET surface area
and Dubinin- Radushkevich are built into the basic
software. Data can be exported to spreadsheets or
VersaWin Quantachrome"tas powerful physisorption
data processing package for additional display and
Performance2 Station4 Station
Analysis Stations 2 4
Analysis Gas input 11
Analysis liquid input 11
1 3 5
Maximum number of optional (low pressure@??P transducers
2 2 4
3 <0.05% FS
Vacuum pump Standard external oil pump or optional internal turbomolecular pump
Degas type External, optional in-situ
Sample Cells Glass of various sizes
Analysis temperature range
4 -20!?DFC to 100!?DFC
Thermostated manifold yes (40!?DFC to 110!?DFC@??P
P 0 Calculated from temperature, measured on empty station, or user entered.
Data reduction and reporting Full complement of data reduction and display methods.
Operating System Compatibility both 32- and 64-bit Windows XP, Vista, Windows 7, and Windows 8
Environmental, Electrical, and Mechanical
Temperature Range 10'sB 6C – 38'sB 6C
Max Relative Humidity 90% (non-condensing@??P
Input Voltage (VAC@??P 10 0 !bbRD120 or 20 0 )V?? 4 0
Frequency (Hz@??P 50/60
Max Power (W@??P 270 340 410 480
height: 85.8cm (33"3P#`y?@??P
52. 5cm (20(Cy@??P
75.0 cm (29$4? @??P
1 Standard version (optional low pressure transducers can be installed@??P210 or 100 torr3For standard 1000 mbar pressure transducer 4 According to manufacturer's specifications at the circulating bath without load, actual minimum sample temperature will be higher.
In its standard con!gW?guration the Vstar is a powerful tool for performing water and organic vapor sorption analyses for most
applications, however, there are some applications where extra control or precision is necessary. For these applications we
o@e?s`er several options to extend the capabilities of the instrument.
Each Vstar comes standard with a circulating bath, with all required tubing and sample jackets. this circulator is
capable of controlling the sample temperature of one to four samples fro?3c20'sB 6C to 100'sB 6C with a thermal stability
o&?20.01'sB 6C*. the 2-station Vstar comes with a 7 liter circulator and the 4-station model comes with a 15 liter
circulator. additional circulators can be added to allow completely independent temperature control of each
sample in a multi-station system.
*according to manufacturer"tas specication of circulating bath without load. actual sample temperature limits will dier
depending on manifold temperature.
High vacuum option Turbo pump to <10 -8 m b a r ( 7. 5 x 1 0 -9 To r r@??P
Option 1 10 torr transducer, Minimum pressure reading:
0.005 torr, Accuracy <0.5% of reading
Option 2 100 torr transducer, Minimum pressure reading:
0.05torr, Accuracy <0.5% of reading
Thermal stability (ºC@??P Temp range (ºC@??P
In-situ Outgas Option 5'?F 0 .1Ambient to 400
Low Pressure Operation
The standard Vstar has one 1000-mbar transducer for each station and one for the manifold. In most applications this is all that
is needed to precisely measure the pressure changes due to adsorption. If the optional turbomolecular pump is ordered lower
pressures can be achieved. When operating at these lower pressures or with high vapor pressure liquids,
transducers are available to measure the small changes in pressure due to adsorption or desorption.
For quick outgassing of samples, which do not contain large amounts of volatile material, an In-Situ outgas option is available.
It consists of a furnace and controller, which can be programmed to heat the sample at a user-de!gW?ned rate and hold under
vacuum for a selectable period of time. Multiple ramp and hold cycles can be programmed for each sample.
Sample Preparation: Degassers
Consistent and reliable results depend upon proper sample preparation procedures and the limitation in analysis
throughput is often sample preparation, since complete degassing of samples can often require several hours.
Quantachrome manufactures several models of degassers to ful!gW?ll your sample preparation needs. These degassers
provide a virtually continuous supply of properly prepared samples for the
the FloVac provides cost e@e?s`ective vacuum degassing. Complete with single-
zone heater (to 400'sB 6C@??P, digital temperature controller and built-in digital
vacuum gauge. Each sample station has its own adjustable evacuation / back -
!gW?ll rate control. Flow degassing is also possible and can be advantageous in
removing large quantities of moisture prior to vacuum degassing. Individual
cooling stations. PC temperature Control software included.
Vacuum pump not included.
Fully featured preparation unit. Individually heated stations with programmable
heating pro!gW?les for r&D, commercial labs and multi-user laboratories. Dual
modes (vacuum oaC??ow) for furtheaC??exibility and optimization. temperature
control and logging via PC software "%?Bincluded@??P. Integral cooling stations provide
Vacuum pump not included.
the gold-standard in sample preparation for physisorption analyzers. It provides
PC control of all heating zones with individual heating ramps and times. the
built-in cold trap enable ea0pVcient removal of condensables at low degassing
temperatures and for a clean vacuum. turbo- pumped version available for rapid
Vacuum pump included.
Our global service staff assure you that Quantachrome Instruments will continue
to be the reliable engines of material characterization laboratories. We offer you
the flexibility of choosing from service contracts tailored to provide you with the
response time, service package, and spare parts discounts that best fit your needs.
Quantachrome spare parts are certified to work with our instruments. We provide
rapid response spare parts orders, and keep large inventories of replacement parts
and hardware available.
Our fully equipped, state-of-the-art powder characterization laboratory
(email: firstname.lastname@example.org), provides the option of contracting for
expert testing services. Laboratory services are also available to validate the
applicability of our products prior to your purchase using your actual samples.
Lifetime Application Support
We view the field support of our instruments as an essential component of our
business strategy. Our expert scientists are always available to answer questions
on applications, or the use of our instruments. We do this as a standard service
regardless of whether you have a service contract with us or not.
Partners in Science
Quantachrome has a scientific research department consisting of world renowned
experts in material characterization. Our staff, led by team conducts collaborative
research projects with leading material research labs around the world. They
regularly publish articles in leading peer reviewed journals, and speak at technical
symposiums around the world.
For almost half a century Quantachrome"tas
scientists and engineers have revolution-
ized measurement techniques and
designed instrumentation to enable the
accurate, precise, and reliable characteri-
zation of powdered and porous
materials. We have an unwavering
commitment to providing state of the art
technology, along with superior and
unparalleled customer service and
Our commitment to customers is to
support you before, during, and after
the sale throughout the lifetime of our
instruments. This is a big commitment
because our products are so robust and
reliable that we regularly find many still
in use for decades.
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Our policy of continuous development may cause the information and speciffcations contained herein to change without notice or liability.
The quality of Quantachrome"tas after sales service support is the reason we
are proud to maintain life time relationships with our customers.
Renowned innovator for today"tas porous materials community.
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