Search News Archives
Follow us on
Conferences | Events
Media Partners

New Differential Refractometer for Precise dn/dc Determination

publication date: Dec 14, 2018
 | 
author/source: TESTA Analytical Solutions

AYE Differential Refractometer.


Testa Analytical Solutions e.K. has added the AYE Differential Refractometer to its existing line of high-performance instruments for chromatographic measurements.

The AYE is a flexible differential refractometer that may be used in either static or dynamic mode. In static mode, the specific refractive index increment (dn/dc) of dissolved samples can be easily and precisely determined in just a few minutes. The specific refractive index increment is a critical parameter required to determine absolute molecular weight using static light scattering (SLS) detectors. This is because a relatively small error in dn/dc determination will lead to twice the error in calculating molecular weights. It is important also to determine the dn/dc value at the same wavelength as the SLS detector laser or a further error will be introduced, as dn/dc is strongly dependent from wavelength.

The AYE differential refractometer offers a large number of wavelength options to enable precise matching of your SLS detector laser operating wavelength, thereby ensuring reliable and reproducible results every time.

Where the dn/dc value of the sample is already known, the AYE differential refractometer can be used for precise and sensitive concentration determination. The amount of sample used for this can also be easily recollected and therefore utilized for further investigations.

Testa Analytical Solutions e.K. is a company dedicated to supplying the best possible instrumental solutions for characterization of polymers, particles, nanomaterials and proteins. Drawing upon over 30 years’ experience of technologies serving these markets, the staff at Testa Analytical are happy to share their knowledge with researchers worldwide to help provide them with a working solution for even the most demanding applications.

 

more on the AYE Differential Refractometer

more from testa analytical



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



 

Popular this month


 

Lose the Solvent Headache with Cole-Parmer VapLock™ Closed Systems


Tomocube adds 3D Fluorescence Imaging to Holotomography Microscopy for World First


ZEISS Elyra 7 with Lattice SIM IntroducedZEISS Elyra 7 with Lattice SIM Introduced


Restek Now Has Even More of What You Need to Keep Your LC Flowing


Metrohm contributes to global monograph modernization initiative


Fused-Core Selectivity Toolkits for Superficially-Porous Particle Method Development


Introducing Renishaw’s New RA816 Biological Analyser


ID Kit – fast, easy, and accurate detection of heroin and other illicit drugs


Safe Evaporative Sample Preparation of High Potency APIs


Simplifying high content screening with the VIAFLO 96

 

 

Can't find what you are looking for?


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