Atago 1240 NAR-4T Abbe Refractometer, Refractive index (nD) : 1.4700 to 1.8700 Measurement Range


ScaleRefractive index
Measurement RangeRefractive index (nD) : 1.4700 to 1.8700
Minimum ScaleRefractive Index (nD) : 0.001
Measurement AccuracyRefractive index (nD) : ±0.0002
Ambient Temperature5 to 40゚C
Digital ThermometerIndication range : 0.0 to 50.0゚C
(Accuracy : ± 0.2゚C, Minimum indication : 0.1゚C)
Measurement Temperature Range5 to 50゚C
(Temperature range available of the circulating water)
Light sourceLED (Approximating to wavelength of D-Line)
Power SupplyAC100 to 240V , 50/60Hz
Dimensions & Weight13×18×23cm, 2.5kg (Refractometer)
10×11×7cm, 0.5kg (Thermometer)
Power consumption5VA
Special Order Option : The sample stage height can be customized.


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

· Test piece C with m-naphthalene : RE-1197

· Test piece D for measurement of film : RE-1498

· Test piece E for measurement of film : RE-1499

· Monobromona-phthalene as contact liquid : RE-1196

· Methylene iodide containing sulfur solution : RE-1199

· Contact liquid LJ : RE-99080

· 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.

  • £5300.00
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 waterCan be connected to a circulatingRefractive index scale

Research and Development on new materials for modern technologies is being actively conducted in every industry. Many of these materials (especially polymer film and related materials) are of high refractive index - often too high for the existing Abbe refractometers. These can now be measured with the nD 1.4700 to 1.8700 range of the NAR-4T. *Dispersion values cannot be measured with this unit




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

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
  • Measurement Range
    1.4700 to 1.8700
  • Measurement Accuracy
  • Measurement Temperature (°C)
    5 to 50゚C
  • Ambient Temperature (°C)
    5 to 40゚C
  • Manufacturer
    Atago Co Ltd