Refractometers
Rudolph Research Analytical manufactures high precision refractometers for research
laboratory and QC applications. Our J Series product line includes standard
and wide range units, including the J57, J157, J257 and J357 refractometers. Electronic
temperature control is standard on all of our refractometers, eliminating the need for
waterbaths—resulting in cost savings and avoidance of possible contamination. Learn how
Rudolph Research Analytical J Series refractometers differ from the traditional Abbe refractometer,
by eliminating the need for prism replacement. Our high performance J357 automatic refractometer offers
advanced features associated with the world's best refractometers, such as a secure data storage card,
custom programming of concentration scales, highly durable touch screen controls, keyboard lockout security
feature, and interfacing with polarimeters. Rudolph Research Analytical is well known among refractometer
manufacturers for superior quality, service and technical support. Our refractometer instruments and
analytical instruments are relied upon by customers
worldwide for applications requiring high accuracy and temperature dependent data.
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- Refractive Index Range: 1.26-1.70
- 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
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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.
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- Refractive Index Range: 1.26-1.70
- Brix Range: 0-95
- Resolution: 0.0001 RI
- Electronic Heating and Cooling
15°C - 70°C
- Designed as a wide range refractometer to meet the needs of the Pharmaceutical, Chemical, Essential Oil, Flavors, Fragrance and Petroleum based industries.
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- Refractive Index Range: 1.33-1.53
- Brix Range: 0-95
- Resolution: 0.00001 RI, 0.01 BRIX, 0.0001 Urine SG
- Electronic Heating and Cooling:
15°C - 50°C
- Designed as a standard range refractometer for primary use in testing food and water based products.
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- 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)
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Designed as a standard range refractometer for primary use as a QC tool in food quality testing. 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.
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- Refractive Index Range: 1.26-1.70
- Brix Range: 0-95
- Resolution: 0.0001 RI, 0.01 BRIX
- Electronic Heating and Cooling:
20°C or 25°C (Customer specified)
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Designed as a wide range refractometer for primary use in industrial environments such as the chemical industry. The easy to clean measurement surface, one button measurement and built-in electronic temperature control make the J57WR the perfect solution for heavy use applications.
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