Refractive index or Abbe number ( v d or v e ) can be measured at different wavelengths ranging from 450 to 1,100nm.
The DR-M2 digitally displays measurement result of refractive index or Abbe number on the LCD.
Measurement can be achieved by matching the boundary line with the intersection point of the cross hairs.
This refractometer is connectable with digital printer DP-21 ( A ) ( Optional ).

Model	DR-M2
Measurement range	Wavelength 450nm : Refractive index 1.3277 to 1.7379 Wavelength 589nm : Refractive index 1.3000 to 1.7100 Wavelength 680nm : Refractive index 1.2912 to 1.7011 Wavelength 1,100nm : Refractive index 1.2746 to 1.6843
Minimum indication	0.0001 in refractive index 0.1 in Abbe number
Measurement accuracy	± 0.0002 in refractive index ± 0.1 in Abbe number
Measurement temperature range	5 to 50° C
Output terminal	For printer, DP-21 (A) (Optional)
Power supply	AC100 to 240V 50/60Hz
Optional	Cat.No.3011 Digital Printer DP-21 (A) RE-3520 589nm (D) Interference filter RE-3521 486nm (F) Interference filter RE-3522 656nm (C) Interference filter RE-3523 546nm (e) Interference filter RE-3524 480nm (F') Interference filter RE-3525 644nm (C') Interference filter RE-3526 Interference filter (select one wavelength) 450nm to 539nm 540nm to 680nm 681nm to 799nm 800nm to 1550nm RE-9115 Near-infrared ray viewer (with Adaptor)
Parts	RE-1600 Main & secondary prism for DR-M2 RE-4170 Illuminating lamp for DR-M2 RE-1592 Pack of desiccant tablets
Dimensions and weight	Refractometer 13x29x31cm, 6.0kg Light source unit 15x33x11cm, 3.0kg