High Accuracy Refractometer
The Rudolph Research Analytical J457 with smart measure technology
Avoids measurement problems
Sample cover options
Laboratory, wall mount and factory configurations
Smart measure technology
Refractometer with Smart Measure Technology Improves Results
The J457 is the most capable instrument in the Rudolph Research refractometer product line. 3 configurations are available (small footprint, wall mount or factory remote-read) each with exclusive Smart Measure technology that virtually ensures 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. All models come with a digital touch screen and a dual temperature control system utilizing Peltier technology.
Simple to Operate Without Sacrificing Accuracy or Capabilities
The J457 refractometer can be configured with a Load and Go Measurement feature for 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 pre-determined method. This allows the J457 to maintain it’s high level of accuracy and performance with Load and Go convenience.
Versatile Data Storage Options
The J457 offers various data storage options to meet the needs of any lab and any compliance requirement. With 32mb 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.
Try Before You Buy
The J457 is available for a short term trial.
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J457
Simple to Operate
Refractometer Selection Guide
Automated Clean Prism Monitoring
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 operator that further cleaning of the prism is necessary and then 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.
Automated Sample Load Monitoring Reduces 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 it will ask the operator to clean the prism and re-load the sample.
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: Sample residue is left on the refractometer prism surface. Incorrect laboratory refractometer measurements are often linked to cross contamination caused by the previous sample being inadvertently mixed with the current sample ift the prism surface is improperly cleaned between measurements. The J457 has solved this problem as well as the related problems an inaccurate measurement can cause.
Measurement Problem: Sample contamination or improper 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.
Measurement Problem: An insufficient amount of sample covering the refractometer’s prism surface. A small drop of sample in the centre 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
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 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. These results are called flyers because the measured value is quite different from the expected measurement value.
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, it greatly reduces the erroneous refractometer measurements from being recorded.
Smart Measure Features
- Knows when to measure and display a result even when the operator does not
- Dirty prism detection
- Incorrect calibration detection
- Insufficient sample load detection
- Cross contamination detection
- Improper water zero detection
- Trapped air bubble on prism surface detection
Electronic Dual Temperature Control System
All J457 models come with Rudolph’s exclusive Peltier based dual temperature control system. The J457 heats and cools the sample from both prism surface and sample cover. The insulating cover housing seals the Prism Well Ring to create a uniform temperature environment providing unmatched temperature control uniformity resulting in consistently accurate RI measurements.
Sample Cover Options
EP Refractometer Sample Cover
The EP sample cover is excellent for applications where the measurement temperature is near ambient. The cover is a single unpowered piece and temperature control is provided only from below the sample.
CC Refractometer Sample Cover
The (CC) concave sample cover is controlled to the same temperature as the prism. When lowered it provides the upper part of a temperature-controlled microenvironment that totally surrounds the sample.
CP Refractometer Sample Cover
The (CP) contact presser spreads the sample evenly over the measurement area. Therefore, it is ideal for highly viscous samples like heavy syrups and resins that need a thin layer for the best measurement results.
Versatile Instrument and Display Options
The J457 line of refractometers come in multiple measurement unit and display configurations to match your operating conditions and industry requirements.
The J457-CB With User Selected Display
The CB can be added to all OM versions of the J457 including the EP, DP, CP, and CC. There are two versions, one allows the optics to be operated from an external PC. CBS provides the same function and includes a Microsoft Surface. Having a complete choice of any PC based display allowing users more choices.
Laboratory Refractometer with PC Display
Many users run their own computer to control laboratory equipment. It does not suit all applications, but it does offer some advantages. A commercial PC is always going to be much cheaper than a bespoke controller made to an industrial standard It allows the user’s IT department greater control over updates, exporting and backups.
Laboratory Refractometer with Tablet Display
Using a tablet can be a great choice in certain situations. A tablet can be more robust than a PC and easier to locate out of a wet area in an industrial environment
A tablet is easier to move when the refractometer is being used in multiple locations such as being wheeled around a building on a cart.
Wall Mount Configuration
Designed for production environments where water is used for cleaning or there is sample spillage on the work surface. This configuration is also excellent for situations where there is very little work space available: out on the factory floor or in an over crowded satellite lab with little remaining bench space for a standard Bench-top configuration.
Factory Configuration
Recommended when there is a lot of sample spillage on the laboratory’s instrumentation. Factories working with sticky resins and syrups that end up being spilled on the instrumentation are great candidates for the J457-FC as the measurement unit can be as much as six feet away from the display unit.
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.
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Specification
Measurement Scales: Refractive Index (nD) BRIX (% sucrose) and up to 100 custom programmed scales.
Measurement Range: Refractive Index 1.26 – 1.72, BRIX 0 – 100% Urine SG 1.0000-1.0400
Accuracy: Refractive Index ±0.00002, BRIX ±0.015
Reproducibility: Refractive Index ±0.00002, BRIX ±0.015
Resolution: Refractive Index 0.00001 BRIX 0.001
Temperature Control Range: 10°C to 110°C *other temperature control options are available
Temperature Repeatability: +/- 0.002
Ambient Temperature Limit: 5°C to 40°C
Temperature Correction Range: 4°C to 95°C (for sucrose solutions)
Sample Temperature Limit: -20°C to 250°C
Optical Wavelength: 589.3nm (NaD line)
Response Time: User configurable, generally less than 30 seconds
Calibration: Using water or NIST traceable fluids. Factory default calibration can always be reset
Prism: Artificial Sapphire
Acid Resistance: Optional Hastelloy measurement surface
Data Storage/Internal Memory: 32 GB non-removable Compact Flash
Display: 10.4 inch diagonal, 800×600 pixels, color, Flat Panel Monitor with Resistant Touch Screen Interface, 400 nits brightness, gasketted for spill protection.
User Interface: Touchscreen
Communication Interface: 3 USB, RS232 and Cat5 Network (Ethernet)
Power Requirements: 100 – 240 volts, 50 Hz – 60 Hz
Dimensions: L: 43.5 cm, 30.5 cm, 33 cm
Weight: 10.4 kg