| Description | Rudolph Research Analytical, working together with refractometer users from the polymer, petroleum, pharmaceutical and essential oil industries, has developed the J257 Wide Range Automatic Refractometer. The J257 Refractometer features include electronic cooling and heating with an extended Rudolph Research Analytical, working together with refractometer users from the polymer, petroleum, pharmaceutical and essential oil industries, has developed the J257 Wide Range Automatic Refractometer. The J257 Refractometer features include electronic cooling and heating with an extended refractive index range.
Application: The J257 is designed as a multi purpose refractometer for a broad range of refractive index applications. The wide refractive index range of 1.26-1.70 means that this instrument can measure many materials that a refractometer with a food refractive index range of 1.33-1.53 cannot.
Operation: Operating the J257 is as simple as placing a sample on the prism, closing the cover and reading the answer — all in just a few seconds. There are no shadow lines to match and there is no eyepiece requiring any kind of operator determination or manual adjustment. When the "measure when stable" mode is selected, the J257 automatically waits until the sample has been heated or cooled to a predefined temperature before initiating a measurement.
Interface: A large 7.5cm x 10cm cold cathode fluroescent back lit graphics LCD allows the scale, sample temperature, set temperature, air temperature, time, date, and temperature correction status to be easily viewed. All functions are activated through a touchscreen panel that will not wear out or get misplaced like traditional or detachable keyboards. The touchscreen is resistant to fingernails, sharp objects, chemicals, and acids.
Dual Temperature Control System: Unlike other temperature controlled refractometers, the J257 has temperature control from both above and below the sample. The 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 evaporation. Depending on options, the sample cover can also be used to initiate measurement. This means that the operator doesn't even need to touch the refractometer screen on a day to day basis, simple lower the cover and measurement starts automatically.... Read More | All J457's come with Smart Measure™ Technology that automatically detects when the prism is improperly cleaned, insufficient sample is loaded, or if the instrument is improperly calibrated.
Exclusive Dual Temperature Control System
All J457 models come with Rudolph's exclusive Dual All J457's come with Smart Measure™ Technology that automatically detects when the prism is improperly cleaned, insufficient sample is loaded, or if the instrument is improperly calibrated.
Exclusive Dual Temperature Control System
All J457 models come with Rudolph's exclusive Dual Temperature Control System utilizing Peltier Technology. 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
Features - Dirty prism detection
- Incorrect calibration detection
- Insufficient sample load detection
- Cross contamination detection
- Improper water zero detection
- Trapped air bubble on prism surface detection
... Read More | The J57WR Automatic Refractometer was designed to meet the unique needs of industrial environments in the chemical industry where the refractometer is viewed as a QC tool rather than a laboratory instrument. A single flat measurement surface, electronic temperature control and one button measurementThe J57WR Automatic Refractometer was designed to meet the unique needs of industrial environments in the chemical industry where the refractometer is viewed as a QC tool rather than a laboratory instrument. A single flat measurement surface, electronic temperature control and one button measurement capability make it perfect for heavy use applications.
Automatic Measuring System: The Rudolph J57WR features a fully automatic measuring system. The operator simply places the sample on the prism, presses a button and the result is displayed on a 7.5cm x 10cm back lit LCD. There are no shadow lines to match and there is no eyepiece requiring operator determination or manual adjustment.
Electronic Temperature Control: Refractive Index (BRIX) readings are very sensitive to temperature. When measuring sucrose users have the option of correcting for temperature variation but that option does not work for most chemical companies. Users not measuring sucrose or users looking for better accuracy than provided by temperature correction had to spend the extra money for a circulating water bath and then clean and maintain it. The J57WR’s built in electronic temperature control provides the best of both worlds, the absolute accuracy, regardless of sample type, of a temperature controlled instrument with the convenience of operating without a water bath.
Wide Measuring Range: The J57WR was designed for chemical measurement, not food. This means a very wide measurement range from 1.26 - 1.70 enabling the instrument to measure materials like fluorocarbons and aromatic chemicals that are beyond the range of most refractometers.... Read More | The Rudolph Research J27 Handheld Refractometer is a fully portable instrument that combines laboratory-level accuracy with the flexibility needed for on-site measurements. It features precise temperature control, a high-durability sapphire prism, and a user-friendly 7-inch touchscreen interface, The Rudolph Research J27 Handheld Refractometer is a fully portable instrument that combines laboratory-level accuracy with the flexibility needed for on-site measurements. It features precise temperature control, a high-durability sapphire prism, and a user-friendly 7-inch touchscreen interface, making it suitable for various applications in the field.... Read More | The VeriLinkRx® can be used for possible drug diversion testing for dilutions or substitutions in Morphine, Hydromorphone, Oxycodone, Fentanyl, and other narcotics. An analytical method, like Rudolph’s VeriLinkRx® , is a reliable and cost effective solution to verify that the actual narcotic is The VeriLinkRx® can be used for possible drug diversion testing for dilutions or substitutions in Morphine, Hydromorphone, Oxycodone, Fentanyl, and other narcotics. An analytical method, like Rudolph’s VeriLinkRx® , is a reliable and cost effective solution to verify that the actual narcotic is returned to the hospital pharmacy.... Read More |