Introduction
The Technical Bulletin 931 from Rudolph Research Analytical introduces the J47 Automatic Refractometer, designed for food and beverage applications. It emphasizes integrity, quality, and innovation in its service.

Key Features

• Fast Measurement: The J47 offers rapid measurement capabilities.
• Ease of Use: Simple loading, measuring, and cleaning processes.
• Operator Independence: Results are not dependent on operator judgment.

Application
The J47 and J47WR/HP models are tailored for food and beverage testing, particularly for sugar and water mixtures. They are designed for heavy use with a single flat measurement surface and temperature correction.

Automatic Measuring System
The J47 features a fully automatic system, displaying results on a backlit LCD without requiring manual adjustments or operator interpretation.

Temperature Correction
Utilizes ICUMSA temperature correction tables for accurate results without a temperature control system, ideal for sugar and water samples.

Accuracy and Range

• J47: BRIX range of 0-95%, Refractive Index range of 1.32-1.53, accuracy of ±0.1 BRIX and ±0.0001 Refractive Index.
• J47WRHP: Refractive Index range of 1.26-1.70, accuracy of 0.03 Brix and 0.00004 Refractive Index.

Design and Durability
The J47 is a scaled-down laboratory instrument with a sapphire prism for durability, reducing the cost of use compared to traditional Abbe refractometers.

Calibration and Configuration
Offers 1 or 2 point user calibration, password-protected, and customizable display and keypad for specific applications.

Options and Accessories

• NIST Traceable Calibration liquids
• Data capture software
• IQ/OQ/PQ Package
• Small volume sample well
• Acid resistant sample well and plate
• Different measurement wavelengths
• Printer and Barcode reader

Specifications

• Measurement Scales: Refractive Index (RI) and Brix (% sucrose)
• Temperature Correction: According to ICUMSA
• Ambient Temperature Limit: 10°C to 40°C
• Sample Temperature Limit: 0°C to +110°C
• Wavelength: 589.3nm
• Light Source: LED with a lifespan of over 1,000,000 measurements
• Power Requirements: 100 - 240V/50 - 60Hz

Problem Solution
The J-Series refractometers eliminate issues with shadowline interpretation and prism scratches found in traditional Abbe refractometers, offering a more reliable and user-friendly solution.