Measurement of Concentration Dependence of Refractive Index to Enhance Gel Permeation Chromatography for Polymer Characterization Author: Gabor Kiss Date: October 2019 Background: One of the workhorse techniques for polymer characterization is Gel Permeation Chromatography (GPC) which is used to measure molecular weight, molecular weight distribution, degree of branching, radius of gyration, solvent power, etc. The […]
Refractometer Temperature Boost Option
J Series Refractometer Temperature Boost Option Technical Bulletin J Series Refractometer with Temperature Boost Option The Rudolph Research Analytical J Series of refractometers are able to control temperature accurately in addition to reproducibility to the range mentioned in the relevant technical bulletin. However, for certain applications beyond that range, particularly in petroleum, pharmaceutical, plastics, specialty […]
High accuracy digital refractometer J157 from Rudolph Research
Digital Refractometer – J157 available in several models and option configurations. The Rudolph J157 model of Refractometers offers high performance and a range of features to suit many demanding applications in laboratories and harsh industrial environments. Rudolph Research Analytical, working together with refractometer (Refraktometer) users from various countries and disciplines, has developed the J157 series […]
Rudolph Research Refractometer full line overview
Refractometer Video: Select a Rudolph Research Refractometer by industry: Refractometer Video Time Stamps: J47 – Food & Beverage – 1:30 J57 – HD Use – Food Quality Testing – 2:00 J157 – High Accuracy – Water based Chemicals 2:42 J257 – Polymer, Petroleum, Chemical – 4:00 J357 – Pharmaceutical, Chemical, Petroleum, Essential Oils, Fragrance – […]
Ultra Low Volume Refractometer
Ultra Low Volume Refractometer Background Low Volume Refractometer The Ultra Low Volume Refractometer (ULV) option is designed for situations where only a very limited amount of sample is available. This is often related to the biological sciences, but the ULV instrument will handle the same range of materials that a standard refractometer will. Refractometer Design […]
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