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Atago RePo-1 | Portable Refracto-Polarimeter [Code 5010]

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Atago RePo-1 | Portable Refracto-Polarimeter [Code 5010] Portable Refracto-Polarimeter Atago

Portable Refracto-Polarimeter RePo-1
A fusion of index of refraction and angle of optical rotation 
-Making the invisible, visible-

Brix can only indicate the overall amount of dissolved solids in a solution. With REPO-1, it is possible to determine if a product has been adulterated by measuring the optical rotation. 

Announcing an All-in-One, refractometer and polarimeter hybrid unit. As little as 3mL sample, Repo-1 can measure both brix and optical rotation of the sample. With the press of a button, purity, international sugar scale, specific rotation, and concentration can be displayed. Users can also set an upper and lower measurement limit. An indicator light alerts the user if a measurement value is within the limits, allowing for optimal efficiency.

“Could a Repo-1 be used in our field?” “How about for my unique application?” 
We look forward to hearing from you!


Model RePo-1 
Cat.No. 5010
Scale Angle of rotation, Brix, 
International Sugar Scale, 
Measurement Readings Angle of rotation, 
User (International Sugar Scale/ Purity/ Specific Rotation/ Concentration), 
International Sugar Scale with ATC
Measurement Range Angle of Rotation: -5.00 to +5.00°(*1),
International Sugar Scale: -130 to +130°Z, 
Brix: 0 to 85%, 
Temperature: 15.0 to 40.0
Display Range Angle of Rotation: -5.99 to +5.99°, 
Brix: -2.0 to 86.6%, 
International Sugar Scale: -130 to +130°Z, 
Purity: -120 to 120%, 
Specific Rotation: -999 to +999, Concentration:-2.0 to 999%, 
Temperature: 14.0 to 41.0
Resolution Angle of Rotation: 0.01°, 
Brix: 0.1%, 
International Sugar Scale: 0.1°Z, 
Temperature: 0.1°C
Measurement Accuracy Angle of Rotation: ±0.1°(at 20
International Sugar Scale: ±3°Z, 
Brix: ±0.2%, 
Temperature: ±1
Repeatability Angle of Rotation: ±0.05°(at 20
Brix : ±0.1
International Sugar Scale: ±1.5°Z (at 20,
Wavelength 589nm (equivalent to the sodium-D line spectrum)
Temperature compensation range Brix: 15 to 40
Purity: 18 to 40
International Sugar Scale: 18 to 40
Ambient Temperature 15 to 40
Storage environment temperature 0 to 65
Light source LED
Sample Volume 3mL
Measurement Time 12 seconds
Power Supply Size AAA alkaline battery x4
International Protection Class IP67
Dimensions & Weight 101 x 160 x 38mm, 325g (main unit only)

(*1) These ranges are measured by the device’s 20mm light path.
These are convertible to below ranges:
-25.00°to +25.00°with a 100mm observation tube
-50.00°to +50.00°with a 200mm observation tube
Any sample that has Angle of Rotation within above ranges can be measured by RePo units.


Catalog Download

Atago Portable Refracto-Polarimeter RePo Series
Four Points

  1. 2 in 1
    Brix alone can only indicate the overall amount of dissolved solids in a solution. With REPO-1, it is possible to determine if a product has been adulterated by measuring the optical rotation. For example, fructose rotates light to the left while glucose rotates light to the right. If a sample has been adulterated with glucose, it will make the optical rotation readings appear more positive than a pure solution. 

  2. Compact size
    Great portability, 10.1×16.0×3.8cm and weighs only 325g.

  3. Automatically calculated scales
    Press 'User' to select the desired scale: Purity, International Sugar Scale, Specific Rotation, and Concentration.

  4. Measurement evaluation indicator
    Measurements are evaluated against pre-set tolerance limits, and the result is indicated by green or red light. (Upper and lower tolerance limits must be set in advance to using this function)

Application Examples

Sugar industries

(sugar manufactures and refineries)
Analyzing inverted sugar syrups Analyzing fragrances
Honey industries
  • Investigating how fast different honey crystallizes by determining the fructose and glucose content

  • Researching honey collected from the same district, or honey collected from the same flower
Measuring Method

1. Fill the sample stage up to the fill line (approx. 3mL).
2. Press START.
3. Measurement is displayed.
Please leave your enquiry here, we will reply as soon as possible.
Company Name  
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