DR-M4 Refractometer – Refractive index measurement at different wavelengths

The DR-M4 Refractometer can measure refractive index at different wavelengths from 681 to 1100 nm.

Specifications:

• 450 nm: RI 1.5219 to 1.9220
• 589 nm: RI 1.4700 to 1.8700
• 680 nm: RI 1.4545 to 1.8544
• 1,100 nm: RI 1.4260 to 1.8259

Refractive index or Abbe number (νd or νe) can be measured at different wavelengths from 450 to 1,100 nm (for measurement at wavelengths from 681 to 1,100 nm, the optional near infrared beam viewer (RE-9119) is required). The DR-M4 displays the refractive index or Abbe number measurement result digitally on the LCD screen. Measurement can be obtained by matching the boundary line with the intersection point of the cross hairs. This refractometer can be connected to the digital printer DP-AD (B) (optional).