Specifications
Measuring range |
1.33-1.83 nD |
Accuracy |
0.01 nD |
Resolution |
0.01 nD |
Illumination |
|
ER601-NA |
Ambient light with sodium filter |
ER601-LED |
Ambient light with sodium filter |
|
and LED illumination 589 nm |
Power supply |
110-220 V |
Weight |
0.4 kg |
|
|
Scope of supply |
Polarization filter |
|
Manual |
Download refractometer brochure
Our gemstone refractometers are characterised by their particularly sharp image and good readability. With the sodium filter that only lets through light with a wavelength of 589 nm, the refractometer can be used as a mobile unit with an ordinary light source or with sufficient ambient lighting. LED illumination is also available with a wavelength of 589 nm.
