• Refractive Index Range: 1.29-1.70
• Brix Range: 0-95
• Resolution: 0.00001 RI
• Electronic Heating and Cooling
  15°C -100°C
• Instrument Level 21 CFR Part 11 Compliance
• Local Secure Data Storage
• Designed as a wide range refractometer to meet the needs of Petroleum based industries and highly regulated Pharmaceutical laboratories.
  Chosen for wide range, accuracy, reliability and durability by customers worldwide from among the world's best refractometers.

  Broszura J357(.pdf)

• Refractive Index Range: 1.32-1.70
• Brix Range: 0-95
• Resolution: 0.0001 RI
• Electronic Heating and Cooling
  10°C - 40°C
  10°C - 70°C (optional)
• Designed as a wide range refractometer to meet the needs of the Pharmaceutical, Chemical, Essential Oil, Flavors, Fragrance and Petroleum based industries.

  Broszura J257(.pdf)

• Refractive Index Range: 1.33-1.53
• Brix Range: 0-95
• Resolution: 0.00001 RI, 0.01 BRIX
• Electronic Heating and Cooling:
  10°C - 40°C
  10°C - 70°C (optional)
• Designed as a standard range refractometer for primary use in testing food and water based products.

Broszura J257(.pdf)

• Refractive Index Range: 1.33-1.53
• Brix Range: 0-95
• Resolution: 0.00001 RI, 0.01 BRIX
• Electronic Heating and Cooling:
  20°C or 25°C (Customer specified)
• Designed as a standard range refractometer for primary use in industrial environments where the refractometer is operated on the factory floor. As with all Rudolph refractometers, the artificial sapphire prism provides lower total cost of ownership by eliminating the need for prism replacement associated with the traditional Abbe refractometer when used in high throughput applications.

Broszura J157(.pdf)

Application Specific

• Designed specifically for measuring materials to be used in the Optical Waveguide Lightmode Spectroscopy (OWLS) system; the J157-633 has all of the same features as the standard J157 automatic refractometer but operates at 633nm instead of the standard 589nm.
• For more details on the OWLS system please see www.owls-sensors.com
• For more information about our analytical instruments or help with feature comparisons for products offered by other refractometer manufacturers, contact Peter Marriott at Rudolph Research Analytical.

Refractometer Calibration Standards

Rudolph Research Analytical works with Cargille Laboratories to provide a range of refractometer calibration standards

All Calibration standards are;

• Supplied with NIST certificate
• Supplied in 1oz (28ml) bottles
• Many different standards available
• Available calibrated at different temperatures
• All fluids calibrated at 40C or lower have an accuracy of 0.0001 or better