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All articles from TESTA Analytical Solutions

  New Differential Refractometer for Precise dn/dc Determination

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....

 

  Autotitrator for Zeta Potential Analyzer

BI-ZTU autotitrator

Testa Analytical Solutions e.K reports on how automation of isoelectric point measurement can be achieved using a BI-ZTU autotitrator in combination with a Nanobrook zeta potential analyzer. The stability of a dispersion is commonly determined by zeta potential. However, the surface chemistry of solid particles in a dispersion can be modified by altering parameters such as pH, surfactant concentration and salt concentrations....

 

  Characterization of Polymeric Microgels & Nanogels

Microgels & NanogelsTesta Analytical Solutions reports how the Institute of Applied Radiation Chemistry at the Lodz University of Technology (Poland) determined molecular weight and radius of gyration of polymeric microgels and nanogels by static multiangle laser light scattering (SLS) measurements using a BI-200SM goniometer. A nanogel is a two-component system of a diameter in the range of tens of nanometers, consisting of an intramolecularly crosslinked polymer chain...

 

  New Surface Zeta Potential option for the NanoBrook range of zeta potential analysers

zeta potential analysersTesta Analytical Solutions e.K. has introduced a Surface Zeta Potential option for its NanoBrook range of zeta potential analysers. Adding the new surface zeta potential option to a Nanobrook analyser allows you to measure the electrical charge on materials like coated glass, plastic, tape, or other flexible surfaces. The system uses known probe particles and purpose-designed electrode to calculate surface zeta potential. Leveraging proprietary phase analysis light scattering (PALS) technology...

 

  Determining the Electrical Charge on Material Surfaces

Surface Zeta Potential option for its NanoBrookTesta Analytical Solutions e.K. has introduced a Surface Zeta Potential option for its NanoBrook range of zeta potential analysers. Adding the new surface zeta potential option to a Nanobrook analyser allows you to measure the electrical charge on materials like coated glass, plastic, tape, or other flexible surfaces. The system uses known probe particles and purpose-designed electrode to calculate surface zeta potential....

 

  Ultra-Sensitive Online Viscometer

online differential viscometerTesta Analytical Solutions e.K has introduced a highly sensitive, online differential viscometer which can be used as part of a triple detector GPC/SEC system to determine the size and conformation of all types of synthetic polymers, biopolymers, proteins and peptides. Drawing upon over 30 years expertise, the new Testa Analytical detector incorporates technological innovations that dramatically reduce the noise level...

 

  Sensitive Mobility Measurements by Phase Analysis

NanoBrook ZetaPALSThe NanoBrook ZetaPALS from Testa Analytical Solutions e.K is a highly accurate and easy-to-use Zeta Potential Analyzer using Phase Analysis Light Scattering. Based on the principle of phase analysis light scattering (PALS) – the Nanobrook ZetaPALS is designed for measuring electrophoretic mobilities. The Nanobrook ZetaPALS from...

 

  Versatile Analyser for Polymer & Protein Characterisation

BI-MwAThe BI-MwA Molecular Weight Analyser from Testa Analytical Solutions e.K. is a high-performance tool for studying synthetic and natural polymers in solution as well as investigating protein aggregation, oligomerization, and complex formation. Employing a 30mW, 660 nm diode laser - the BI-MwA uses 7 angles to determine the intensity of scattered light as a function of angle and polymer concentration...

 

  Reference Standards for Organic and Aqueous GPC/SEC Applications

ReadyCal Calibration KitsTesta Analytical Solutions now offers ReadyCal Calibration Kits – certified reference standards for organic and aqueous GPC/SEC applications. The colour coded ReadyCal standards come as polymer cocktails pre-weighed into 1.5ml autosampler vials for easy and convenient calibration of GPC/SEC experiments....

 

  Refractive Index Detector for Challenging GPC/SEC Applications

Differential Refractive Index (DRI) DetectorThe Differential Refractive Index (DRI) Detector from Testa Analytical Solutions is a next-generation instrument for challenging GPC/SEC applications. The DRI Detector has been designed to fit seamlessly with all commercially available MALS and SLS detectors resulting in more accurate and reliable results. Its high sensitivity makes the Testa Analytical DRI Detector the perfect companion...

 

  Materials Characterisation at ACHEMA 2018

TestaTesta Analytical Solutions e.K (Berlin, Germany) is taking the opportunity at ACHEMA 2018 to demonstrate its expertise in characterisation technologies for chemical and pharmaceutical manufacturers and research groups. ACHEMA is the leading chemical and process engineering exhibition that creates a forum for the exchange of ideas and new technology. Testa Analytical product specialists will be on hand in Hall 4.1, Stand K74 to discuss their...

 

  All-in-One Solution for Particle and Protein Characterization

Testa Nanobrook OmniThe NanoBrook Omni from Testa Analytical Solutions combines leading edge particle sizing and zeta potential technology in one powerful and accurate instrument for particle and protein characterisation. Drawing upon high performance Dynamic Light Scattering (DLS) for particle sizing and distribution, and on Doppler Velocimetry....