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

 

Chromatography in Cannabis Testing

 

New Catalogue of Infectious Disease Antibodies and Antigens

 

Acquisition of B&W Tek takes Metrohm’s Spectroscopy Portfolio to the Next Level

 

Gilson announce the release of the extended mass range VERITY® 1910 MS Detector

 

NanoFCM Opens European Office and Centre of Excellence for Scientific Application Support

 

Hitachi High-Technologies Launches Two New Scanning Electron Microscopes

 

Discovery Park & MedCity to Partner on Prestigious Angels In MedCity Programme

 

Merck Lectureship 2019 Awarded to Susumu Kitagawa

 

BioCity Invests in Carbon Recycling Start-Up, Deep Branch Biotechnology

 

Agilent Announces Unique Portfolio to Advance Immunotherapy

 

 


 

 


 

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