Rudolph’s J257 is a Digital, Bench-top Refractometer, featuring electronic cooling and heating with an extended, refractive index (RI), measurement range. The wide range of 1.26 – 1.72 means that this instrument can measure all materials in every pharmacopeia.One of the most capable and advanced digital, bench-top refractometers available for use in modern laboratories today. The […]
Refractometer Video – The Rudolph Research J457
The most capable refractometer in the Rudolph Research Refractometer product line. Rudolph’s J457 Automatic Refractometer is available in a Standard, Factory & Wall-Mount Configuration. One of the most capable and advanced digital, bench-top refractometers available for use in modern laboratories today. The Rudolph Research J 457 offers exclusive, Dual Peltier Heating and Cooling for effective […]
Refractometer Temperature Correction & Control using a Rudolph J457 Refractometer
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 […]
Refractometer Calibration, How to Perform a Single & 2 Point Calibration
Refractometer Calibration, How to Perform a Single & 2 Point Calibration 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 / ±0.03 BRIX making […]
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 […]
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