Source Video: Polarimeter Measurement Procedures to Determine Optical Rotation / Specific Rotation Video Transcript from the Rudolph Research Video Library This video covers how to fill cells and make a (Optical Rotation and Specific Rotation) measurements using a Rudolph polarimeter equipped with the exclusive and patented Temptrol heating and cooling system. Although this demonstration was […]
Polarimeter Cell Cleaning Prior to Making a Measurement
Cleaning a Polarimeter Sample Cell – Video Transcript Video location: Polarimeter Sample Cell Cleaning Procedures This video gives a brief overview of the proper method of cleaning a Rudolph polarimeter cell. This video is relevant to; 40T Temptrol polarimeter cell supplied with the Autopol IV-T, V, V plus and VI – 40T Polarimeter cell is […]
Alcohol Density – Alcoholic beverage Sample Preparation
Measuring Alcohol Density with a Density Meter requires specific sample preparation procedures for accurate results. Procedures for sample preparation for measuring alcohol density with a Rudolph Research DDM2911 Density Meter Application Report Alcoholic Beverage Sample preparation: In general, there are two basic types of alcoholic beverage classifications, each with a different procedure required prior to […]
Measuring Alcohol Concentration – Alcohol Proof Testing
Measuring Alcohol Concentration for Alcohol Proof by measuring the Density of Alcohol Alcohol Concentration Determination Introduction – Pycnometers, hydrometers, and digital density meters are officially recognized methods for the determination / measuring alcohol proof (ethanol) concentration for quality control and to insure proper product labeling for declaration of alcohol proof testing for the payment of […]
Refractometer Temperature Correction Vs Control
Refractometer Temperature Correction & Control Peter Marriott – Refractometer Product Manager Rudolph Research Analytical Also see video: Refractometer, Temperature Correction & Control with a Rudolph J457 We are going to look at the effects of changing temperature on refractive index measurement and if Temperature Correction can compensate for temperature variances or if actual temperature control […]
Digital Refractometers – Universal Concentration Meters
Digital Refractometers – Universal Concentration Meters By Angelo DePalma, Ph.D – Partial Reprint – Originally Published April 6th, 2011, for original see Lab Manager; – Refractometers are instruments that quantify and identify chemicals and materials based on their refractive index (RI). A unique property related to the speed of light as it passes through a substance, RI (Refractive Index) […]
Refractometers: Innovating Around the Edges
Refractometers are analytical instruments that measure the refractive index (RI) of liquids.
API Gravity – Petroleum – Digital Density Meter Application Note
API Gravity – Density Meter Application Report Understanding API Gravity: API Gravity – Crude oil is an indispensable starting material for all types of products and various other fuels, oils, and lubricants. Characterization of these products is most complex and often impractical. Therefore, the measurements of more simple properties such as flash point, vapor pressure, […]
Density Meter Application Note, Concentrations
Density Meter Application Report Concentration Determinations using the Rudolph Research Analytical DDM 2911 Density Meter Introduction From purely an intuitive approach, it is easy to understand how a density meter can determine concentrations. If you were to measure the density of a pure water sample, you would find its density to be 0.9982 g/cm³ at […]
