ViscoStar Differential Viscometer for GPC

上海仪舶实验室自动化 25-01-23 12:46:10

ViscoStar Differential Viscometer for GPC

The ViscoStar® is an on-line differential viscometer for GPC that measures the intrinsic viscosity (IV) of polymers. It is best used in conjunction with the DAWN® or miniDAWN® multi-angle light scattering (MALS) detectors in SEC-MALS-IV analysis to determine absolute molar mass, size, molecular conformation, branching ratio and Mark-Houwink parameters.

The ViscoStar may also be used for traditional online IV applications, such as Universal Calibration or Mark-Houwink analyses of molecular weight and size, all supported by Wyatt’s ASTRA® chromatography software.

The ViscoStar incorporates several innovations that make it the most advanced differential viscometer available: automated thermal bridge tuning to ensure perfect bridge balance every run, a patented pump pulse suppression system that eliminates pressure fluctuations due to the GPC pump without loss of chromatographic resolution, and dual-Peltier thermal control for optimal isolation of the temperature-sensitive bridge from room temperature variations.

Features

Sensitivity: 100 ng of 100 kDa polystyrene in THF at 1 mL/min, with a standard 7.8 x 300 mm GPC column

Differential pressure noise: < 0.05 Pa

Differential pressure range: 6.9 kPa

Dynamic range: 135,000:1 for measuring small and large peaks simultaneously

Solvent compatibility: compatible with most aqueous and organic solvents

Capillary bridge autobalance: 10-min thermal, leak-free mechanism

Delay volumes: 8.1, 5.4 or 2.7 mL standard; 16.2 mL optional

Temperature control: 4 – 70 °C

Touch-panel display for immediate access to data, diagnostics and settings

Software: ASTRA chromatography software provides comprehensive analyses and user-friendly features including HPLC control, “One-click MW” and user-designed reports. Optional 21CFR11 support for GMP.

Applications

Polymers: absolute molar mass and size (distributions and moments), conformation and branching, Mark-Houwink parameter determination

Linear or branched polymers, co-polymers

Polymers not amenable to SEC-MALS analysis dissolved in semi-opaque or refractive-index-matched solvents, or polymers that fluoresce at the MALS laser wavelength

Most aqueous and organic solvents

[ViscoStar Differential Viscometer for GPC]相关推荐
Nanogen

Nanogen

Nanogen’s advanced technologies provide researchers, clinicians and physicians worldwide wi……...

Dassault Systèmes

Dassault Systèmes

Dassault Systèmes, the 3DEXPERIENCE Company, is a catalyst for human progress. We provide bu……...

LUM GmbH

LUM GmbH

LUM GmbH is the leading company in the field of accelerated dispersion and stability analysis and……...

今日仪器
  1. Item North America

    Item North America

    Item North America is a premier provider of precision ball screws for use as a drive mechanism in linear slides, multi-axis motion and complex material handling devices. item ball screws feature hi……

    代理品牌 2025-09-04

  2. Streaming Answers: SurPASS™ 3

    Streaming Answers: SurPASS™ 3

    SurPASS™ 3 is capable of measuring the zeta potential over an extensive range of materials and allows the analysis of varied surface properties and their changes. The zeta potential explains ……

    仪器产品 2025-09-04

  3. AHP Materials

    AHP Materials

    AHP Materials is a specialty materials company focused on the manufacturing and selling of high purity specialty metals and compounds. AHP concentrates mainly on Antimony, Cadmium Sulfide, Telluriu……

    代理品牌 2025-09-04

返回顶部小火箭