J57AB /J157AB Refractometers for Measurement of Urea Concentration for Diesel Engine Additives Standards Designed in accordance with DIN 70071 / ISO 22241-2 Basic operation The J57AB is a sub model of the J57HA and most details on the Technical Bulletin 941 apply; the J157AB is a sub model of the J157 and most details on […]
Automobile Industry Refractometer Options Package
Suggested users – Car and truck manufacturing factories looking to check fluids before they are put in new vehicles – Laboratories which analyze fluids from in-service vehicles – Companies making concentrated urea solutions that will eventually get diluted and sold to use in diesel engines – Companies buying concentrated urea solutions and diluting them for […]
Contact Lens Refractometers
Rudolph Research Contact Lens Refractometers The Contact Lens Refractometers are designed for measurement of contact lenses both hard and soft as well as accurately checking saline solutions. The J457CLR offers: Reproducible pressure measurement Soft contact lenses will change refractive index if solution is pressed out of the matrix. By using a light, but repeatable, amount […]
Refractometry – Measuring Refractive Index
Refractometry Definition – Measuring Refractive Index Refractive Index Measurement or Refractometry is the method of measuring substances refractive index and assess their composition or purity. Refractometry is a technique that measures how light is refracted when it passes through a given substance. Snell’s Law which is also known as The Law of Refraction describes the […]
Refractometer Sample Cover Options
Refractometer Sample Cover Options for Rudolph J157 Models and Above Rudolph Research Analytical sample cover pioneered dual temperature control for automatic refractometers and still remains a market leader in this all-important technology. Refractive Index varies with temperature. However, this variation depends on the sample but for a refractometer to give an accuracy of 0.0001 the […]
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