Rudolph Research's J457 Pharmacuetical and Analytical Laboratory Refractometer

The J457 Electronic, Laboratory Refractometer is the most capable instrument in the Rudolph Research Refractometer Product Line. 3 models/configurations are available. All come with Rudolph’s exclusive Smart Measure™ Technology that virtually insures accurate Refractive Index (RI) and BRIX, measurements by automatically detecting sample problems. The J457 can determine when the prism is improperly cleaned, insufficient sample is loaded, or if the instrument is improperly calibrated. Various configurations are available for a small footprint, wall mount, or a remote-read factory configuration. All models come with a digital touch screen, and our Dual Temperature Control System utilizing Peltier Technology.

The J457 Laboratory Refractometer, Simple to Operate Without Sacrificing Accuracy or Capabilities.

The Rudolph J457 can be configured with a Load and Go Measurement feature for your routine measurements tasks. Initiating a measurement begins by placing a sample on the prism. There are no buttons to press and all measurements are made  based on the per-determined Method. This allows the J457 to maintain it’s high level of accuracy and performance with Load and Go convenience.

Refractometer - Load and Go Measurements

Versatile Data Storage Options

The J457 Refractometer offers various data storage options to meet the needs of any lab and any compliance requirement. With 8mb of on-board memory the J457 can work on a stand-alone basis or memory sticks can be utilized to expand memory or make data easily transportable to a PC. The J457 is easily connected to your network or may be linked with a PC. For all data storage options see: Refractometer Data Storage

The J457 Laboratory Refractometer with Smart Measure™ Advantage

Measurement problem:

> Sample residue is left on the refractometer prism surface

Experience has shown that incorrect laboratory refractometer measurements are often linked to cross contamination caused by the previous sample being inadvertently mixed with the current sample being measured. Ensuring that the prism surface is properly cleaned between measurements can be difficult for busy environments where multiple operators are involved. Rudolph Research Analytical has solved this problem as well as the related problems an inaccurate measurement can cause.

Smart Measure™ solution:

Automated clean prism monitoring is now integrated in the Rudolph Research J457 Laboratory Refractometer.

Smart Measure™ knows when the Refractometer’s prism is clean. If the prism surface does not produce the correct “Clean Prism” result then Smart Measure™ notifies the Laboratory Refractometer operator that further cleaning of the prism is necessary. Smart Measure™ notifies the operator that it is ready to measure after the prism is satisfactorily cleaned. The refractometer is now ready to make an accurate RI or BRIX reading with a verified clean sample well.

Measurement problem:

> An insufficient amount of sample covering the refractometer’s prism surface.

A small drop of sample in the center of the prism will measure correctly. A large drop of sample completely covering the prism surface will measure correctly. A small drop on the perimeter of the prism will produce erroneous RI and BRIX readings with the reason often unknown to the operator.

Smart Measure™ solution:

Automated sample load monitoring – reduces refractometer user error.

Smart Measure™ knows when a sample has been loaded on the refractometer‘s prism and immediately begins evaluating various metrics surrounding the sample load. If Smart Measure™ determines that those metrics indicate proper sample loading, it will display the result with a sample quality number. If Smart Measure™ determines that the metrics indicate an improper sample load, Smart Measure™ will ask the operator to clean the prism and re-load the sample.

Measurement problem:

> Sample contamination or improper refractometer calibration.

An improperly cleaned refractometer prism, where sample residue is left in the measurement well, can mix with a water zero or calibration fluid. This type of contamination during the refractometer calibration process will cause an error across all subsequent measurements, yielding incorrect RI and BRIX readings.

Smart Measure™ solution:

Automated sample calibration inspection.

Smart Measure™ is constantly measuring the refractometer’s prism surface and monitoring the value measured against its database of results. If during a water zero calibration the instrument detects a value that is too different from the database or the RI value being input is far from the measured value, it will alert the operator.

Measurement problem:

> The sample has air bubbles that affect measurement results.

Many samples have air trapped inside them or are carbonated. These samples read well most of the time as long as air bubbles are not trapped between the refractometer’s prism surface and the sample. When this happens the operator gets an erroneous result often referred to as a flyer. These results are called flyers because the measured value is quite different from the expected measurement value.

Smart Measure™ solution:

Automated sample calibration inspection.

Smart Measure™ catches these flyers by scanning the detector for varying RI values and then alerts the user to reload the sample. Since the user does not get a value to record until a new sample load is completed, Smart Measure™ greatly reduces the erroneous refractometer measurements from being recorded.

A Laboratory Refractometer for special measurement applications:

RI Measurement Kit for Solids, Semi-Solids, and Films.

Refractive Index measurement of solids and semi-solids is useful in laboratories for insuring the quality and consistency of transparency and pigmentation. Refractive Index is often measured on incoming materials and finished products. Highly accurate RI measurements are possible with the J457 Refractometer utilizing Rudolph’s Solid / Film measurement option and accessories kit.

Other Equipment by this Supplier

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