Gems Refractometer kit,Monochromatic Light source.white

Description

The Gems Refractometer kit Set included the followings:
A standard refractometer
A bottle of contact liquid (5ml) RI=1.79
Individual Monochromatic Light source around 589nm, AC 100V-240V operated
Upgrade Version Light source with 800mAh rechargeable battery inside, can be used up to 10 hours continuonly
One Polarizer filter
The eyepiece
lens have a
djustable
focusing
Safety box
Specification:
R I range: 1.32－1.81
Graduation: 0.01
Accuracy of Reading: ±0.003
R.I. Liquid :1.79,5ml,16g
Individual Monochromatic Light Source 110V-240V,50/60Hz
No rainbow colour of the reading edge.
Clearer edge of the RI reading you will get !
The new version of Monochromatic light source
can give you a clear, sharper and more precise reading,
while whole spectrum will give a hazy rainbow colour reading.
It's upgraded by embedding with a rechargeable battery, which can be charge up whenever the plug on (not the power on). Now, You can works without area restriction, whenever, wherever you can't find an AC plug.
One Polarizer filter fit for the eye-piece.
Refractometer size: 30x 70 x 120 mm
Light source: 60 x 65 x 110 mm
Material: Optics lens, Metal case
Weight : 1.5 kg (with the case)
Our own photos to show you some features of our KIT
The quicker you can get the reading,
the lesser use of your eyes
and
save your times and your vision for the beauty of the stone !
Directly from the manufacturer and will mail to you from Hong Kong.
Gem stones
RI
Birefringence
Feldspar varieties
1.52 to 1.57
0.004 to 0.009
Amber
About 1.54
0
Beryl varieties
1.56 to 1.60
0.003 to 0.01
Chrysoberyl
1.74 to 1.76
0.008 to 0.01
Corundum varieties
1.76 to 1.78
0.008 to 0.009
Diamond
2.42
0
Fluorite
1.52 to 1.57
0.004 to 0.009
Garnet almandine
1.76 to 1.81
0
Garnet demantoid
1.89
0
Garnet grossular
1.73 to 1.75
0
Garnet pyrope
1.74 to 1.76
0
Garnet spessartine
1.79 to 1.82
0
Lolite
1.54 to 1.56
0.008 to 0.012
Jadeite
About 1.66
0
Jet
About 1.66
0
Nephrite
About 1.62
0
Opal
1.40 to 1.46
0
Paste
1.50 to 1.70
0
Peridot
1.65 to 1.69
0.036
Quartz crystalline
1.54 to 1.56
0.009
Quartz polycrystalline
1.53 to 1.55
0
Natural spinel
1.71 to 1.74
0
Spinel verneuil synthetic
1.72 to 1.73
0
Tanzanite
1.69 to 1.70
0.006 to 0.013
Topaz
1.61 to 1.64
0.008 to 0.010
Tourmaline
1.62 to 1.65
0.014 to 0.021
Zircon
1.78 to 1.99
+ 0.059
Synthetic spinel
1.72 to 1.73
0
All our items offer 1 year guarantee, if malfunction or broken within 1 year, you can return to us and replace a new one .
(except Mishandling.)
All of our item will undregoes a very serious quality assurance before shipping, we just want to ensure our client can enjoy high quality gemmological tools and achieve a high standard preformance.
All will come in a compact case.