J257 & J357 Series of Automatic Refractometers

$J257 & J357 Series of Automatic Refractometers$

J257 & J357 Series of Automatic Refractometers

Product catalog summary

Overview
The document is a technical bulletin from Rudolph Research Analytical, detailing the features and specifications of the J257 and J357 series of automatic refractometers. These instruments are designed for laboratory flexibility with industrial strength and simplicity.

Key Features

5 Decimal Place Accuracy: The J357-CC model offers 0.00002 RI accuracy over a range of 1.26 to 1.72 RI.
TempTrol™ System: Dual temperature control system providing stability and range from ±0.01°C between 5°C and 100°C.
Trend Analysis™: Allows long-term tracking of measurement stability.
Embedded Windows 7™ OS: Facilitates direct connection to LIMS or servers, with data saving options in PDF or Excel formats.
Smart Measure™: Automatically detects sample loading and ensures proper cleaning before reading.
Interface Flexibility: Customizable display options to suit different laboratory and manufacturing needs.

Specifications

Measurement Range: Refractive Index 1.26-1.72, Brix 0-100.
Accuracy: J257 offers ±0.0001 RI accuracy, while J357 offers ±0.00002 RI accuracy.
Temperature Control: Range from 5°C to 100°C with ±0.01° reproducibility.
Prism: Synthetic Sapphire, easy to clean, resistant to most solvents.
Operating System: Embedded Windows 7 with touchscreen interface.

Applications

Petroleum Solutions: Meets ASTM standards for various petroleum products.
Pharmaceutical Testing: Suitable for testing refractive index in pharmaceuticals, including halogenated ethers.

Calibration and Validation

Offers NIST traceable calibration kits for both pharmaceutical and general use, ensuring accurate and reliable measurements.

Conclusion
The J257 and J357 series refractometers by Rudolph Research Analytical provide advanced features and flexibility for precise measurements in various industrial and laboratory settings, supported by robust calibration and validation options.

Catalog excerpts

$J257 & J357 Series of Automatic Refractometers-1$

Laboratory Flexibility with Industrial Strength and Simplicity The J257 & J357 Series of Automatic Refractometers Rudolph Research Analytical serving its customers with Integrity, Quality, and Innovation for over fifty years.

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$J257 & J357 Series of Automatic Refractometers-2$

The Rudolph Advantage The New J257 and J357 Series of Automatic Refractometers from Rudolph Research Analytical bring together Exclusive Rudolph features that provide unmatched performance to improve your process. Smart Measure™ Calibration Reference Materials The J257 and J357 model Series know when a sample is loaded on the prism and will read automatically. The instrument will not read if the prism is not cleaned properly. CRM’s are available at various RI indexes and Temperatures. Contact a customer service representative for assistance in choosing a calibration standard that is right for...

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$J257 & J357 Series of Automatic Refractometers-3$

-Interface Flexibility - Three Displays Allow For Three Interface Solutions Rudolph allows the lab manager to select from different display options because we understand laboratories and manufacturing floors have different needs when it comes to the information required for monitoring a process. Your instrument's interface can be customized to meet the information your application and environment demand whether you choose our full featured interface or our Load-and-Go™ display interface. The J257 and J357 offer laboratory flexibility with industrial strength and simplicity making this model series...

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$J257 & J357 Series of Automatic Refractometers-4$

Dual Temperature Control System Temperature Controlled Concave Sample Cover (CC option is standard) Rudolph Research Analytical's J357 is able to control temperature to 100°C because it has a unique dual temperature control system where heat is applied to both sides of the sample. The (CC)Sample Cover is controlled to the same temperature as the prism and, when lowered, is designed to provide a temperature controlled micro environment that provides unrivaled temperature stability, fast measurement time and minimal Sample evaporation. Optional Contact Presser (CP Option) The J257 and J357 are...

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$J257 & J357 Series of Automatic Refractometers-5$

Measurement Surface Ultra Flat Easy to clean prism – No matter how good the refractometer is, the results will only be right if the instrument is clean. Rudolph’s flat prism design makes cleaning easy, even with sticky syrups. The flat low profile sample well with a sample volume of less than 1ml is easily cleaned by wiping with a common paper towel. A single cleaning surface with scratchproof sapphire prism makes this a popular choice for high throughput laboratories. Other manufacturer’s compromise From the pictures below one can see that other manufacturers have to make a compromise with the...

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$J257 & J357 Series of Automatic Refractometers-6$

Rudolph Research Analytical 55 Newburgh Road, Hackettstown, NJ 07840 USA • Phone: 973-584-1558 • Fax: 973-5584-5440 • E-mail: [email protected] • Internet: www.rudolphresearch.com

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