Atago 3261 RX-5000a (alpha) Automatic Digital Bench-Top Refractometers, Refractive index (nD) : 1.32700 to 1.58000 Brix : 0.000 to 100.00% Measurement Range


The RX-5000α (alpha) is an automatic digital refractometer which has a thermo-module to control temperature, a constant temperature water bath is not necessary.It displays the top-and-bottom-limit-bar for your set control range.This product comes standard with a two (2) year limited warranty against manufacturer’s defects from the date of the original purchase. The warranty period can be extended to three (3) years if the product is registered with ATAGO.FDA 21 CFR Part 11 Software Included in Standard Delivery. 


Model RX-5000α
Cat.No. 3261
Range Refractive index (nD) : 1.32700 to 1.58000
Brix : 0.000 to 100.00%
Resolution Refractive index (nD) : 0.00001
Brix : 0.01%
Temperature: 0.01°C
Accuracy Refractive index (nD) : ±0.00004
Brix : ±0.03%
Temperature control range 5.00 to 60.00°C
Dimensions & Weight 37×26×14cm, 6.4kg
Output terminals • Printer (for ATAGO digital printers)
• Computer - RS-232C
Connection to a USB port requires a USB to RS-232 adapter (optional)
Warranty 2 years standard (3 years with product registration)

  • 10% High Accuracy Sucrose (±0.01%) : RE-111001
  • 20% High Accuracy Sucrose (±0.01%) : RE-112001
  • 30% High Accuracy Sucrose (±0.01%) : RE-113001
  • 40% High Accuracy Sucrose (±0.02%) : RE-114002
  • 50% High Accuracy Sucrose (±0.02%) : RE-115002
  • Calibration Certificate
  • Printer paper (regular) for Thermal printer : RE-8412
  • Printer paper (long-term storage) for Thermal printer : RE-8414
  • Printer paper for Dot matrix printer : RE-89403
  • Ribbon cassette : RE-89402
  • Fan Filter Replacement : RE-58001

  • £12500.00

World's Highest Standard of Accuracy

The RX series are the most accurate of ATAGO refractometers programmed with a trusted and advanced algorithm. The epitome of which boasts the accuracy of ±0.000010 nD and ±0.005% Brix.

Ergonomically Designed Layout

The RX- a series was designed with ease of use in mind. Extensive research was performed in the design phase to ensure an ergonomic interface that made operation easy while maximizing efficiency.

4 Measurement Mode Options

For maximum accuracy

Displays the measurement value once the sample reaches the target temperature.

For no temperature control

Provides an option to turn the thermo-module off. Without temperature control, the measurement value is displayed in 4 seconds after the START key is pressed.

For fast results

Measures refractive index and temperature at fixed intervals and displays the estimated measurement value at the target temperature.

For emulsion samples

Displays the measurement value once a certain level of sample stability is achieved.


Digital Refractometers RX-α series Measurement Method

4 easy steps

  • Place a sample on the prism.

  • Press the START key to start a measurement.

  • Measurement value is Displayed.

  • Wipe off the sample to clean.

    • SKU
    • Commodity Codes
  • Measurement Range
    Refractive index (nD) : 1.32700 to 1.58000 Brix : 0.000 to 100.00%
  • Measurement Accuracy
    Refractive index (nD) : ±0.00004 Brix : ±0.03%
  • Measurement Scales
    Brix, Refractive Index
  • Manufacturer
    Atago Co Ltd

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