Deutsch English

Gemstone Refractometer ER604-LED

Gemstone Refractometer ER604-LED
Zoom image

€ 497.42

19 % VAT incl. excl. Shipping costs

Shipping time: 3-6 days (EU) 5-21 days (world)

Gemstone Refractometer ER604-LED

Professional gemstone refractometer with LED

- Resolution: 0.01 nD
- Measurement range: 1.33 – 1.81 nD
- LED 589 nm illumination
- Na-filter 589 nm
- lightweight  (0.4kg)
- automatic multi-voltage power supply (100 – 240 V)
- Aluminium housing

This small and light refractometer is ideal for travel, offering you the performance you need in a convenient size. Its bright monochromatic LED works on voltages between 100 to 240 Volts with automatic voltage switching. The eyepiece has a focusing tube, and a polarizing filter comes with the unit.

Gemstone refractometers are used for the classification and quality control of gemstones. The gemstone to be examined is simply placed on the prism with a drop of contact fluid. The refractive index of the gemstone is read through the ocular of the refractometer. The refractive index is an important parameter in classifying a mineral or gemstone. Each mineral has its typical refractive index, due to its chemical composition and crystalline structure. 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 with a wavelength of 589 nm.

Gemstone Refractometer ER604-LED

Customers who bought this product also bought the following products:

Polariscope PK11

Polariscope PK11

Polariscope for pocket torch.

€ 47.60  (19 % VAT incl. excl. Shipping costs)
KSW5000-T-K-W Microscope for Diamonds and Gemstones

KSW5000-T-K-W Microscope for Diamonds and Gemstones

Optical equipment:
10x wide-field eyepieces
0.7 - 4.5x zoom objective
Total magnification 7 - 45x

Transmitted light
Cold light source with light conductor
Dark field
Polarisation feature

Special features:
Phototube, stone holder
Glass cuvette and cuvette table
horizontal mounting of the microscope head possible

€ 2,426.41  (19 % VAT incl. excl. Shipping costs)
Hand Spectroscope 15001

Hand Spectroscope 15001

This handheld grid spectroscope will meet most laboratory applications, including a manual option with grating.

€ 143.99  (19 % VAT incl. excl. Shipping costs)
Stone Tweezers KOF10LR with Locking and Groove, silver

Stone Tweezers KOF10LR with Locking and Groove, silver

Stone tweezers with locking and groove, size L.

Colour: silver
Material: stainless steel

€ 35.70  (19 % VAT incl. excl. Shipping costs)

Shopping cart

You do not have any products in your shopping cart yet.

Welcome back!

e-mail address:
Forgot your password?

Manufacturer information

A.KRÜSS Optronic
More products