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Ultra Low Volume Refractometer

Ultra Low Volume Refractometer Background 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. Design Compared with a standard

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Refractometer Validation

Refractometer Validation       Refractometer Validation Introduction In a regulated laboratory the purchase price of an instrument is only relatively small part of the total cost. For some instruments there are expensive consumables and the manufacturer will provide the original instrument very inexpensively in order to lock the laboratory into these. For other instruments

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Polarimeter Cell Filling Solutions

New innovations in Polarimeter cell filling from Rudolph Research. Introducing the Rudolph Research Analytical AutoFill™(Patent Pending) Filling a Polarimeter Cell has never been easier. Polarimeter cell filling made easy – Rudolph Research Analytical developed AutoFill™ (Patent Pending) a simple and easy way for fast and reliable polarimeter cell loading. Polarimeter sample cells are filled without

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J157HA-BUTYRO Refactometer

J157HA-BUTYRO Refractometer – for the Analysis of Food in Line with Indian Food Safety Standards. All J157HA BUTYRO Refractometer offers the following features: Range 1.32 to 1.53 Refractive Index / 0 – 100 Brix which is sufficient to measure all edible oil and sugar materials in standards Accuracy of 0.00002 Refractive Index / 0.02 Brix

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Refractive Index for Particle Size Analysis

Refractometers for Powder – Particle Size Analysis In May 2015 Rudolph Research Analytical released additional capabilities for all pharmaceutical level refractometers. The J257, J357, and J457 refractometers come standard with a method for measuring the refractive index of powders as required by a particle size analyzer. Particle size analysis is important in developing and producing

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Drug Diversion in the Hospital Pharmacy

Drug Diversion in the Hospital Pharmacy Drug Diversion Background: Hospital pharmacies are responsible for dispensing drugs including powerful and regulated narcotics to hospital patients including pain medications during and after surgery. The hospital pharmacist is concerned with dispensing the correctly prescribed drug in the prescribed doses and that any unused drug is returned for proper

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Refractometer Data Storage

Refractometer Data Storage – Applies to Rudolph Research J257, J357, and J457 Laboratory Refractometers Embedded systems. All Rudolph refractometers are equipped with a control system using Windows 7 embedded. This control system has 8mb of on board memory which is extendable using USB sticks. The control system can also be hooked directly to a network

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Refractive Index – RI Measurement of Solids & Films

RI Measurement of Solids and Films. RI measurement of solids and semi-solids is useful in labs for monitoring quality to insure consistency of transparency, pigmentation, or batch quality. RI might be measured on incoming materials or finished products. Highly accurate measurements are possible with the right refractometer and a method to measure the material. Instrument:

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Density Meter – Refractometer Instrument Combinations

Versatile Density Meter and Refractometer Instrument Combinations from Rudolph Research Analytical. Combined Density – Refractive Index instruments Many users need to measure both refractive index and density and feel that a combined system will be a good alternative.  The advantages of such a system are many; Since parts are shared the total cost of the

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Refractometer Uses in Industry and Selection

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,

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Refractometer Calibration – 2 Point Method

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

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Polarimetry – Optical Rotation vs. Specific Rotation

Polarimetry – Optical Rotation vs. Specific Rotation – What’s the Difference? By Angelo DePalma, PHD Polarimetry using Polarimeters measure the degree of rotation of polarized light as it passes through an optically active material. Polarimetry was discovered by Étienne-Louis Malus, a French engineer who was studying reflective glass. Several years later another Frenchman, Jean-Baptiste Biot,

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Optical Rotation – Specific Rotation Measurement Procedures – Rudolph Research Polarimeter

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

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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

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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

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Measuring Alcohol Concentration – Alcohol Proof Determination

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

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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

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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) 

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