This Gemological Refractometer has New
Special Design Features. It offers Built in LED light
& External Light source (flashlight).
A small torch or flashlight (FREE &
included in the set), a desktop LED light (optional &
not included in the set) and other light source can be use
as its source of light when the built-in light source won't
work. The built-in LED light source can at least offer 10000hours
working. It has a light entrance at the back and a built-in
filter for the external source of light. This instrument
is considered to be the most important of all gem testing
instruments. It measures the angle at which light traveling
through the stone is bent or refracted, called the Refractive
Index (RI).
Use this to measure Refractive index of
Gemstone or Ore, index of double refraction and identify/authenticate
polished precious and semiprecious gemstones as well as
observing the optical properties and the structure of gemstones,
transparency or opacity and its beauty, durability and scarcity.
Due to chemical composition and crystallization structure,
each gem has a typical refractive index. You can also use
this tool to measure R.I. for many minerals in crystal form
as long as the crystals have a flat and polished face. Through
these parameters, you can determine whether the gem is a
Single Refraction (Isotropic) or Double Refraction (Anisotropic
or Birefringence) and uniaxial or biaxial photopositive
or photonegative.
Special
Features
-
NEW
DESIGN
-
2
in 1 Light Source: Built-in LED Light + External
Light Source (flashlight)
-
Built-in
LED illumination
- Built-in
Light Source Filter for outside light source
-
FREE
Index Fluid and small flashlight/torch
-
Convenient
& easy to carry
-
Durable
and very reliable
-
Characterized
by small volume and less weight
-
A
popular instrument used on jewelry market
-
Approved
by strict quality and safety standards
Specifications
-
Filter:
Polarizing filter
-
Measuring
Range : 1.30 - 1.81 RI
-
Minimum
Graduation : 0.01 RI
-
Accuracy
: ±0.02 RI
-
Illumination
: Internal LED Light Source with momentary/power switch
-
Power:
1.5V Button Batteries (3pcs)
-
Dimension
: 30 x 70 x 130mm
-
Weight
: 400g
-
Ranges
of Application: Laboratory, Gemology
-
-
1
x Vial of 1.800 Refractive Index Oil (FREE)
-
1
x Flashligt/Torch (FREE)
-
-
3
x 1.5V Button Batteries (FREE)
-
1
x Cleaning cloth (FREE)
-
1
x Reference Block (FREE)
-
Sturday
and Hard carrying case
-
-
-
Desktop
LED Light
Just add US$12.00 or AU$14.00 or GBP8.00 to
your order to have the optional Desktop LED
Light in Extra
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