Germany: Refractive Index & Viscometry Detector How a New Dual Detector Enables Sensitive Determination of Molecular Weight Distribution
Editor: Alexander Stark
Testa Analytical Solutions reports the development and OEM supply of a novel combination refractive index / viscometry detector for Brookhaven Instruments Corporation (Holtsville, USA), a supplier of scientific instruments for solving challenging macromolecular characterisation problems.
Testa Analytical has created a range of high-performance GPC/SEC detectors.
(Source: Testa Analytical)
Berlin/Germany — Polymer and plastics manufacturers offer very many different grades of commodity polymers such as poly(vinyl chloride), polyethylenes and polystyrenes. The Molecular Weight Distribution (MWD) of such polymers is a key item of information in tailoring their implementation for different end uses.
Brookhaven Instruments selected Testa Analytical Solutions to develop a combination detector. The Brookhaven Instruments BI-RIVS is a combination RI and Viscometry detector used in SEC/GPC determination of polymer MWD using universal calibration. The BI-RIVS is a true dual-detector, refractometer and viscometer. The refractometer is an integral component of the viscometer bridge, measurement of concentration and viscosity take place on the exact same sample segment, at the very same time. Compared to the more common “external” connection of the two detectors, the BI-RIVS Dual-Detector provides a factor of two to five higher sensitivity, near zero delay volume and unsurpassed overall performance.
Naturally, we always handle your personal data responsibly. Any personal data we receive from you is processed in accordance with applicable data protection legislation. For detailed information please see our privacy policy.
Consent to the use of data for promotional purposes
I hereby consent to Vogel Communications Group GmbH & Co. KG, Max-Planckstr. 7-9, 97082 Würzburg including any affiliated companies according to §§ 15 et seq. AktG (hereafter: Vogel Communications Group) using my e-mail address to send editorial newsletters. A list of all affiliated companies can be found here
Newsletter content may include all products and services of any companies mentioned above, including for example specialist journals and books, events and fairs as well as event-related products and services, print and digital media offers and services such as additional (editorial) newsletters, raffles, lead campaigns, market research both online and offline, specialist webportals and e-learning offers. In case my personal telephone number has also been collected, it may be used for offers of aforementioned products, for services of the companies mentioned above, and market research purposes.
In case I access protected data on Internet portals of Vogel Communications Group including any affiliated companies according to §§ 15 et seq. AktG, I need to provide further data in order to register for the access to such content. In return for this free access to editorial content, my data may be used in accordance with this consent for the purposes stated here.
Right of revocation
I understand that I can revoke my consent at will. My revocation does not change the lawfulness of data processing that was conducted based on my consent leading up to my revocation. One option to declare my revocation is to use the contact form found at https://support.vogel.de. In case I no longer wish to receive certain newsletters, I have subscribed to, I can also click on the unsubscribe link included at the end of a newsletter. Further information regarding my right of revocation and the implementation of it as well as the consequences of my revocation can be found in the data protection declaration, section editorial newsletter.
:quality(80)/p7i.vogel.de/wcms/d5/27/d52718f1b5c0c1326836ec98a3912dbf/0104995823.jpeg "0104995823")
:quality(80)/p7i.vogel.de/wcms/e0/c8/e0c8f10f52ed8e961d2b1929175cbb96/0104994911.jpeg "0104994911")
:quality(80)/p7i.vogel.de/wcms/16/af/16af797a8a1f8bb82362dfa476acb996/0104964405.jpeg "0104964405")
:quality(80)/p7i.vogel.de/wcms/c0/34/c034428f6f7de33dbc90e8b1fdc7fb21/0104949732.jpeg "0104949732")
:quality(80)/p7i.vogel.de/wcms/d9/4b/d94b9122c3c0cb11915ca1e116bea997/0104986115.jpeg "0104986115")
![Dr. E. Poonguzhali has successfully transferred commercially available starting materials to medicinally important 2-acylbenzo[b]thiophenes in the presence of copper acetate & tetrabutylammonium chloride catalytic system.](https://cdn1.vogel.de/ZK7wqjVy7Ps1OSwUs5tXgrNZGEE=/288x162/smart/filters:format(jpg):quality(80)/images.vogel.de/vogelonline/bdb/1964500/1964559/original.jpg "Dr. E. Poonguzhali has successfully transferred commercially available starting materials to medicinally important 2-acylbenzo[b]thiophenes in the presence of copper acetate & tetrabutylammonium chloride catalytic system.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963700/1963740/original.jpg "The high resolution, modern TFT touch display has a multi-lingual user interface and shows all important information at a glance.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963400/1963417/original.jpg "The 700kHz, 260-element histotripsy ultrasound array transducer used in Prof. Xu’s lab.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963800/1963885/original.jpg "Anna-Lisa Paul, left, and Rob Ferl, working with lunar soils in their lab.")
:quality(80)/images.vogel.de/vogelonline/bdb/1962400/1962494/original.jpg "The operating room produces 70 percent of hospitals' greenhouse gas emissions, but two surgeons-in-training have come up with solutions to reduce that number.")
:quality(80)/images.vogel.de/vogelonline/bdb/1960700/1960778/original.jpg "This plant is modeling the latest wearable sensor (right) to monitor water loss from leaves with a smartphone app (left).")
:quality(80)/images.vogel.de/vogelonline/bdb/1958800/1958848/original.jpg "The user-friendly unit, which weighs less than ten kilograms and does not require the use of filters, can be powered by a small, portable solar panel.")
:quality(80)/p7i.vogel.de/wcms/0d/3b/0d3b418adb4c7af71022c52878dd8fdf/0104800005.jpeg "0104800005")
:quality(80)/images.vogel.de/vogelonline/bdb/1963700/1963732/original.jpg)
:quality(80)/images.vogel.de/vogelonline/bdb/1963500/1963506/original.jpg "Healthy adults eating a diverse diet with at least eight to ten grams of soluble fiber a day have fewer antibiotic-resistant microbes in their guts. Soluble fiber is found in foods such as grains, beans, lentils, nuts, and some fruits and vegetables.")
:quality(80)/images.vogel.de/vogelonline/bdb/1963400/1963459/original.jpg "Thermo Scientific Dionex Ionpac CS21-Fast-4m ion exchange column.")
:quality(80)/p7i.vogel.de/wcms/2a/d9/2ad9f27ac42afb15a06350c4c5fb17c9/0104994092.jpeg "0104994092")
:quality(80)/p7i.vogel.de/wcms/29/a8/29a87518fdfa5741b9cf4429a448729f/0104917902.jpeg "0104917902")
:quality(80)/p7i.vogel.de/wcms/93/1b/931ba9a54f6fff41d2cdd7cf74a1e174/0104884529.jpeg "0104884529")
:quality(80)/p7i.vogel.de/wcms/b7/3c/b73c41e85851adc1e2be52f7eefa194f/0104868646.jpeg "0104868646")
:quality(80)/images.vogel.de/vogelonline/bdb/1710600/1710675/original.jpg "Discover how to set yourself up for success when performing balance-based density determination of solids such as jewelry and precious metals.")
:quality(80)/images.vogel.de/vogelonline/bdb/1682500/1682579/original.jpg "The new XPR Analytical balance redesigned to meet the needs of laboratory technicians of working fast and lean.")
:quality(80)/images.vogel.de/vogelonline/bdb/1677000/1677080/original.jpg "Enhance your weighing accuracy, comfort and productivity with the redesigned XPR Analytical balance.")
:quality(80)/images.vogel.de/vogelonline/bdb/1783500/1783514/original.jpg "Ten times more sensitive than conventional technologies, these light-weight strain sensors can be incorporated into rehabilitation gloves to improve their sensitivity and performance.")
:quality(80)/images.vogel.de/vogelonline/bdb/1807700/1807779/original.jpg "Set-up for static and dynamic light scattering measurement.")
:quality(80)/images.vogel.de/vogelonline/bdb/1786200/1786242/original.jpg "The new “Advanced i-Series” consists of the Prominence-i HPLC and Nexera-i UHPLC systems. It meets user demands for analyzing a large number of samples or quickly re-processing data, even remotely.")