• Multi-Wavelength Abbe Refractometer

Multi-Wavelength Abbe Refractometer

  • Scale : Refractive index, Abbe number
  • Wavelength Range from 450 to 1100nm 

Refractive Index or Abbe number (νd or νe) can be measured at different wavelengths ranging from 450 to 1,100nm.

For measurement at wavelengths ranging from 681 to 1,100nm, the optional near infrared ray viewer (Part No.RE-9119) is required. The DR-M2/DR-M4 digitally displays the measurement results of refractive index or Abbe number on the LCD. Measurement can be achieved by matching the boundary line at the intersection point of the cross hairs.

These refractometers can be connected to the digital printer. The DR-M4 is a high refractive index version of the DR-M2, with a refractive index measurement range of 1.4700 to 1.8700 (at a wavelength of 589nm). 

Model DR-M2 DR-M4
Cat.No. 1410 1414
Scale Refractive index
Abbe number
Measurement Range Refractive index 1.3278 to 1.7379 (Wavelength 450nm)
Refractive index 1.3000 to 1.7100 (Wavelength 589nm)
Refractive index 1.2912 to 1.7011 (Wavelength 680nm)
Refractive index 1.2743 to 1.6840 (Wavelength 1,100nm)
Refractive index : 1.5219 to 1.9220 (at 450nm)
Refractive index : 1.4700 to 1.8700 (at 589nm)
Refractive index : 1.4545 to 1.8544 (at 680nm)
Refractive index : 1.4260 to 1.8259 (at 1,100nm)
Minimum Indication Refractive index : 0.0001
Abbe number : 0.1
Measurement Accuracy Refractive index : ±0.0002
(With the attached test piece at 500 to 650nm)
Ambient Temperature 5 to 40゚C
Measurement Temperature Range 5 to 50゚C
(With circulating constant water bath)
Display Panel LCD
Light source Halogen lamp
Output For printer DP-63 (B) Optional
Wavelength Range From 450 to 1100nm (with interference filters) 
(For measurement at wavelengths ranging from 681 to 1100nm, the Near Infrared Ray Viewer (Optional is required)
Power Supply AC100 to 240V, 50/60Hz
Dimensions & Weight 13×29×31cm, 6.0kg (Refractometer)
15×33×11cm, 3.2kg (Light source unit)
Power consumption 160VA