Refractometer Uses in Industry and Selection By Angelo DePalma, PHD A refractometer characterizes fluids based on their refractive index –the refraction occurs due to the change in the speed of light as it travels through a material of one density to one of different density. By definition a vacuum has a refractive index of 1,
Refractometer Calibration, 2 point method, Rudolph Research J157 – Video Transcript Refractometer Calibration resource – for laboratory refractometer users utilizing a Rudolph Research Automatic Refractometer. Hi, I am John Ciccarella, Service manager of the most innovative line of refractometer instruments made today from Rudolph Research Analytical. John Ciccarella , Rudolph Research, Service Manager with a
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
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
SOFT, Society of Forensic Toxicologists Conference, Atlanta, GA Oct. 18-23, 2015
AOAC 2015, September 27-30, 2015 – Westin Bonaventure Hotel
Gulf Coast Conference, NRG Park, Houston Texas
Measuring Alcohol Concentration for 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 (ethanol) concentration for quality control and to insure proper product labeling for declaration of alcohol content (Proof) for the payment of tax. In the
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 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)
We wish to take this opportunity to express our deep sense of appreciation for your technical assistance over the last twenty years…
From the moment of our preliminary discussion of purchase until the present, you and your staff have been most helpful and courteous in all situations…
I would definitely recommend your instrumentation to anyone I know because it is excellent instrumentation and awesome technical support always.
Please be informed that we are using the J357 Refractometer and the Autopol V since 2006, and that we are pleased about their accurate and stable measurement…
The professionalism, product knowledge, and responsiveness of the entire team at Rudolph had been absolutely first rate…
The refractometer is easy to use and easy to clean. We are looking forward to many years of trouble free operation.
The lab technicians like it for its ease of use, and the lab supervisors (myself included) like it for its reproducibility from one technician to the next…
I just want to say how pleased we are with our Rudolph J157 Automatic Refractometer. We use it in the Production Lab where it is just as accurate as our standard Abbe type refractometer.
Incorporating this system into our laboratory has been like adding another employee. It saves time while ensuring accurate results, and is extremely user-friendly. In addition, I’ve found that Rudolph Research Analytical goes the extra mile to ensure their customer is satisfied with their product and their service. I would highly recommend this equipment and this company to any lab as busy as ours…
Based on very satisfying results, we decided this year to replace also the backup Abbe style instrument by a second Rudolph refractometer. We are very pleased with your instruments; you can consider us as reference customer.