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Refractometers
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J57AB/J157AB Refractometers (Refraktometer) for measurement
of urea concentration (WU) in diesel engine fuel additives.
Standards
Designed specifically for the petroleum industry and specifically for measurement of urea, (WU) in diesel engine fuel additives, in accordance with DIN 70071 and ISO 22241-2.
Basic Operation
The J57AB is a sub-model of the fully automatic, bench-top, digital J57HA and most details on Technical Bulletin 915 apply. The J157AB is a sub-model of the J157 and most details on Technical Bulletin 911 apply. The differences between the AB models and the standard models are:
Temperature
Both instruments have enhanced temperature performance to better than 0.02° C, meeting the requirements of DIN 70071 and ISO 22241-2 to ultimately deliver more accurate and consistent WU Number measurements..
Scale
The Rudolph J57AB refractometer is ideal for the petrochemical and petroleum industries working with diesel fuels as it displays results in refractive index (RI) which the operator may then use to automatically calculate, display, and print the WU number from the internal scale system. The Rudolph J157AB has the WU calculations built-in.
Optional Accessories
The Rudolph Research J Series AB refractometers can be supplied with the same range of accessories as the standard J Series, including:
- Printers
- Computer software
- SD card drive
- Barcode reader
- Automatic sipping system
- Autosampler
Rudolph Research Analytical manufactures automatic, digital, bench-top refractometers for a wide variety of industries. With over 5,000 laboratory instruments installed in demanding applications worldwide and thousands still in use that were manufactured in the 70s, 80s, and 90s, Rudolph has established itself as a premier vendor well known for its quality and reliability. Rudolph has also consistently set the pace for innovative design and features that bring new and important functionality to its market leading line of refractometers. Our service and responsiveness come from a deep commitment to serving our customers with integrity, quality and innovation that we have maintained for over 50 years. Please read one of our customer testimonials.