Atago 1311 DR-A1-Plus Abbe Refractometer, Refractive index (nD) : 1.3000 to 1.7100 Measurement Range

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ScaleRefractive index
Measurement RangeRefractive index (nD) : 1.3000 to 1.7100
Brix : 0.0 to 100.0%
(Automatic Temperature Compensation is executed at 5 to 50°C)
Minimum Scale屈折率(nD) : 0.0001
Brix : 0.1%
Measurement AccuracyRefractive index (nD) : ±0.0002
Brix : ±0.1%
Ambient Temperature5 to 40°C
IndicationRefractive index (nD) or Brix (%) and temperature (°C)
Digital Thermometer±0.2°C
Measurement Temperature Range5 to 50°C (at unit of 0.1°C)
(Temperature range available of the circulating water)
Light sourceLED (Approximating to wavelength of D-Line)
Output(1) Digital Printer DP-63(C) (Optional) is used.
(2) Communication syste : RS-232C
Power SupplyWith AC adapter (100 to 240V (50/60Hz) AC input)
Dimensions & Weight13×29×31cm, 6.0kg (Refractometer)
10.5×17.5×4cm, 0.7kg (AC adapter)
Power consumption16VA
Special Order Option : The sample stage height can be customized.

· Digital Printer DP-63(C) (Thermal printer) : Cat.No.3136

· RS-232C Cable For Personal Computer (D-Sub9Pin) : RE-15305

· Adapter for film sample : RE-1581

· Test piece A with m-naphthalene : RE-1195

· Eyepiece for polarizing : RE-1146

* Calibration Certificate : Contact an ATAGO representative for details.


* As for the other consumables & the part please view this.

*Please inform us of a serial number in the case of an order.

Call 01463 830401 For Any Assistance
ATAGO's Abbe Refractometers are highly reliable instruments which measure Refractive Index. Compared with other types of refractometers, the Abbe refractometers are capable of measuring liquid and solid samples such as plate glasses, plastic sheets, and other solid films.
Calibration with waterDigital displayAC outlet (AC100 to 240V)Can be connected to a circulatingRefractive index scale


By very simple operation that needs only to set the boundary line of refraction at the cross hairs, this refractometer directly indicates a measured value (in refractive index or Brix (%), selective) in digits together with temperature on the display. This refractometer enables anybody to carry out measurement easily without reading of analog graduation.

The DR-A1 Digital Abbe Refractometer can now be connected to a printer and computer. Individual measurements and their average values as well as temperature readings can be printed to a DP-63 (C) Digital Printer (sold separately) or transmitted to a computer.

* Dispersive value cannot be measured by this refractometer. 

This model features a brighter field of view than its predecessor, the DR-A1, making it easier to measure inhomogeneous and/or dark samples. The operations and specifications are the same as the DR-A1.  


Icons, for functions, specifications and scales have been added to this catalog

Can be connected to a recorderCan be connected to a recorderMeasurement at a set temperatureMeasurement at a set temperature
Can be connected to a printerCan be connected to a printerAutomatic Temperature CompensationAutomatic Temperature Compensation
Alarm output for high- and low-limit valuesAlarm output for high- and low-limit valuesCan be connected to a circulating Can be connected to a circulating
RS-232C InterfaceRS-232C InterfaceContinuous measurementContinuous measurement
In-line measurementIn-line measurementHigh temperature samplesHigh temperature samples
User scales can be inputtedUser scales can be inputtedExternal Light InterferenceExternal Light Interference


Calibration with waterCalibration with waterClinical refractometersClinical refractometers
Calibration with exclusive standard liquidCalibration with exclusive standard liquidRefractive index scaleRefractive index scale
Compact and easy to carryCompact and easy to carrySalt concentration scaleSalt concentration scale
Digital displayDigital displaySeawater scaleSeawater scale
AC outlet (AC100 to 240V)AC outlet (AC100 to 240V)Wine scaleWine scale
Battery operatedBattery operated  
    • SKU
    • Commodity Codes
  • Measurement Range
    1.3000 to 1.7100
  • Measurement Accuracy
  • Measurement Temperature (°C)
    5 to 50°C (at unit of 0.1°C)
  • Ambient Temperature (°C)
    5 to 40℃
  • Manufacturer
    Atago Co Ltd
  • Country of Origin