March 27th 2025

Increase the accuracy of your molecular weight determinations.

Light scattering is widely recognised as the ‘go to’ technique fechnique for molecular weight determination of polymers and biopolymers. An accurate dn/dc value is essential for precise molecular weight determination using light scattering techniques. Design optimized for operating with any commercial light scattering instrument our Differential Refractometer is a versatile 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, the Differential Refractometer is a true workhorse and a valuable addition to any Light Scattering lab.

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Why flowmeter calibration is so important.

Whether you work in quality assurance, production or R&D - regular calibration is important because it ensures the accuracy and reliability of the measurements taken by your flowmeter. Most important of all, regular recalibration is required by many international regulations including 21 CFR Part 11 that apply to regulated industries. A yearly recalibration is therefore a fundamental part of compliance. Operating to ISO-17025 guidelines, recalibration of your TESTA flowmeters once per year at our Berlin facility is a sound investment to ensure the accuracy and reliability of your measurements and full compliance with many regulatory standards.

HPLC performance validation kit for Field Service Engineers.

Specifically designed for validating the performance of HPLC systems, our liquid chromatography flowmeter enables easy and accurate measurement of flow rates. Supplied in a durable carry case our flowmeter kit for field service engineers is the perfect tool for performing OQ/PQ and routine performance verification activities. In addition, using these real-time flowmeters, service engineers can generate information about short-term variation in HPLC system performance caused by pulsations and fluctuations.

Replacement components for flowmeters.

By popular demand we are launching spares kits for our flowmeter family. For some time, customers have asked if they can purchase replacement components for their TESTA Analytical LC Flowmeter, µ-Flowmeter, Semi-Prep, and Prep Flowmeters. Using our top quality components ensures the reliability and performance of your flowmeter. Learn more now about our new Flowmeter Spares Kits for tubing and fittings.