Refractometer Temperature Correction & Control with a Rudolph J457 Rudolph Research Analytical details the difference between Temperature Control & Temperature Correction using distilled water, cranberry juice, ethylene glycol & engine oil on their newest automatic refractometer, the J457. The accuracy of Temperature Correction Vs Temperature control on samples that deviate from pure water and sucrose […]
Product Family: Refractometers - Page 9
Refractometer Calibration Demo, How to Perform a Single & 2 Point Calibration
Refractometer Calibration Demonstration, How to Perform a Single & 2 Point Calibration Pre 2014 This video demonstrates how to perform a Single & Two Point Calibration on a Rudolph J157 Refractometer. The J157 is designed as a high accuracy refractometer for food and water based chemical applications. The instrument can read to ±0.00004 RI / […]
Wide Range Refractometer – Rudolph J357
J357 Wide Range Refractometer Refractometer, Rudolph Research’s J357, part of the Rudolph Refractometer Product Line, Designed as a research quality instrument the Rudolph J357 Digital, Bench-top Refractometer has the highest performance of any refractometer in the Rudolph range. This instrument offers the same extra wide RI measurement range as our chemical industry refractometer models combined […]
Refractometers, Measuring Volatile Samples
Refractometer Measurements with Volatile Samples – Video This video demonstrates Rudolph’s Automated Volatile Sample Measurement system using Distilled Water & Glycerin. The measurements were accurately recorded over a 24 hour period reflecting constant measurements & thus reproducibility was proved. Measurement Results: Distilled Water RI : 1.3330 Glycerin RI : 1.4741 For more information about Rudolph […]
J457 Refractometer – Load and Go
High Accuracy with Load and Go speed and convenience. The J457 Refractometer is one of the most highly accurate Laboratory Refractometers in the market place and offers nearly any conceivable feature a lab may need. You can change many variables for measurements in full screen mode such as temperature to measure any sample, based on […]
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