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.