Channels

 

Special Offers & Promotions

 

 

Latest News

 

 

View Channel

New Products

 

 

View Channel

Video Presentations

 

 

View Channel

Separation Science

 

 

View Channel

Microscopy & Image Analysis

 

 

View Channel

Laboratory Automation & IT Solutions

 

 

View Channel

 

Differential Refractometer improves precision of light scattering molecular weight determination

publication date: Mar 3, 2025
 | 
author/source: TESTA Analytical Solutions

differential-refractometer-improves-precision-light 

TESTA Analytical reports that its Differential Refractometer improves the precision of dn/dc determination using light scattering techniques. An accurate dn/dc value is essential in molecular weight determination of biopolymers and polymers by light scattering.

Backed by decades of experience of Gel Permeation Chromatography (GPC) and Light Scattering techniques, Testa Analytical has created a differential refractometer accessory for light scattering instruments that deliver exceptional performance and is easy-to-use.

The Differential Refractometer is a flexible device which allows fast determination of the specific refractive index increment (dn/dc) of dissolved samples with extremely high accuracy and in just a few minutes. Without any limitations in terms of solvent and with a wide range of measurement temperatures, it is a true workhorse and a valuable addition to any Light Scattering lab. Beneficially, the system also offers different wavelength options enabling precise matching of your light scattering instrument laser operating wavelength, thereby ensuring reliable and reproducible results every time.

The Differential Refractometer operates via a PC using intuitive Windows™ based software which additionally offers the possibility to determine the accurate Concentration of samples with known dn/dc.

The unique design of the instrument furthermore allows total recovery of the measured samples without any dilution or pollution. Samples used for dn/dc can then directly be used for Light Scattering, reducing therefore the time needed for sample preparation and avoiding errors.

 

View Product Information

 

 

About TESTA Analytical

TESTA Analytical offers a range of high-performance GPC/SEC detectors, GPC/SEC pumps, accessories, and software products customizable to meet your exact needs. Drawing upon over 30 years’ experience, TESTA Analytical Solutions has established itself as a respected creator and supplier of top quality, innovative, high performance chromatography instrument kits, and detectors with end users and OEM clients around the world.

 

Recent news from TESTA Analytical

 

 


If you have not logged into the website then please enter your details below.



 

News Channels

 

 

Subscribe to any of our newsletters for the latest on new laboratory products, industry news, case studies and much more!

Newsletters from Lab Bulletin

 

Request your free copies HERE

 

 

 

Popular this Month

Top 10 most popular articles this month

 

 

Today's Picks

 

 

 

 

Looking for a Supplier?

Search by company or by product

 


Company Name:

Product:


 

 

 

 

Please note Lab Bulletin does not sell, supply any of the products featured on this website. If you have an enquiry, please use the contact form below the article or company profile and we will send your request to the supplier so that they can contact you directly.

Lab Bulletin is published by newleaf marketing communications ltd.


 

Media Partners

 

Exhibitions & Events