|
|
|
|
|
|
Theory Answers
How does separation work in Gel Permeation Chromatography?
|
"The GPCmax and Triple Detector System is state-of-the-art while remaining affordable and easy to use."
- M. G., Ph.D., Academic Institution
|
Application Notes
Our database of GPC/SEC application notes explain the use of concentration, viscometer and light scattering detectors to obtain a distribution of absolute molecular weight, size and intrinsic viscosity, as well as information on conformation, aggregation, branching and copolymer composition.
|
Tetra Detector Array
A revolutionary, integrated multiple-detector device designed for the characterization of natural and synthetic polymers and copolymers, proteins, protein conjugates, excipients and other macromolecules. Comprised of modular Refractive Index, Ultra-Violet, Low Angle Light Scattering and Viscometer detectors. |
|
|
|
|
|
|
|
|
GPC: Standards |
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.
PolyCAL™ UCS-PS (6 x 12 box)
PolyCAL™ TDS-PS (6 x 2 box)
PolyCAL™ UCS-PEO (6 x 12 box)
PolyCAL™ TDS-PEO (6 x 2 box)
For more information, including full technical specifications, performance information and product details, please click below to download our extensive eight page brochure
outlining our full range of columns and standards.
 |
|
|
|