Selecting a Refractometer for Food and Beverage Industries.

Food and beverage refractometer users require an instrument with an easy to clean sample well, reliable temperature control, and rugged construction. Do you measure …

  • Seed oils
  • Soy bean oils
  • Candy
  • Syrups
  • Dairy products
  • Edible oils
  • Coffee extracts
  • HRCS
  • Juices
  • Juice concentrates
  • Fruit products
  • Confections
  • Starch
  • Milk
  • Hydrolysis products
  • Vegetable products
  • Teas
  • Sodas
  • Sauces
  • Soups
  • Jams
  • Jellies
  • Soft drinks

Feature Highlight

refracto-food-feature-highlightFlat, easy to clean prism — No matter how good the refractometer is, the results will only be right if the instrument is clean. Rudolph’s flat prism design makes cleaning easy, even with sticky syrups. The flat low profile sample well with a sample volume of less than 1ml is easily cleaned by wiping with a common paper towel. The J57 single cleaning surface with scratch-proof sapphire prism makes this a popular choice for high throughput food laboratories.

Model Specification Features and Benefits
Food Refractometer  Measurement Range: 1.32 – 1.53 RI; 0 – 95% Brix
Accuracy:0.00004 RI, 0.03 Brix
Electronic Temperature Control: N/A                      Temperature Correction: According to ICUMSA
Very fast measuring refractometer for the sugar, food, and beverage industries, perfect for high throughput applications where temperature correction and a highly durable bench-top refractometer are required.
  J57-open-thumb  Measurement Range: 1.33 – 1.53 RI; 0 – 100% Brix
Accuracy:0.00004 RI, 0.01 Brix
Electronic Temperature Control: Fixed temperature selection: 20°C and 25°C
 Brix results can only achieve accuracy in the real world if the sample area is cleaned properly. Rudolph’s shallow prism design has no corners or steep angles to trap sticky samples thus avoiding or reducing the problem of cross contamination between samples. The simple, easy to use user interface with large measure button and key lock out feature makes it a popular choice for busy factory labs. Gloved hands and elbows like the big measure key.
J157 Refractometer  Measurement Range: 1.33 – 1.53 RI; 0 – 100% Brix
Accuracy:0.00004 RI, 0.01 Brix
Electronic Temperature Control:Flexible temperature selection between 15°C – 50°C
The J157-CC with non-contact cover (CC) and Auto Measure (AM) are popular option choices for food applications where the sample must be protected from a harsh environment and custom scales are required. Auto Measure (AM) allows for easy measurement on/off by just lifting the presser cover to stop a measurement and closing the cover to start a measurement.
 Refractometer J357 Measurement Range: 1.33 – 1.53 RI; 0 – 100% Brix
Accuracy:0.00004 RI, 0.03 Brix
Electronic Temperature Control:Flexible temperature selection between 15°C – 100°C; TB option: allows 15°C – 110°C with one hour boost to 120°C
J357 is best for high temperature food applications where the product is more stable when measured at a high temperature. For example, the J357 temperature control system is set for 70°C and temperature correction is set for 20°C. The J357 heavy duty temperature control system ensures the sample stays at 70°C while the instrument displays a temperature corrected result of what the sample would read if it were 20°C.

Refractometer for Food and Beverage Labs – Specifications