Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece
Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece
Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece
Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece
Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece
Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece

Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece

Negotiable /Piece

Min.Order:1 Piece

Supply Ability:
1000 Piece / Pieces per Month
Port:
Shenzhen
Payment Terms:
Credit Card

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Place of Origin:
Guangdong, China
Brand Name:
Fable
Model Number:
FGR-002A
Weight:
0.92KG
Measurement Accuracy:
0.002
Min. Div.:
0.001

Shenzhen Fable Jewellery Technology Co., Ltd.

Business Type: Manufacturer,Trading Company
Shenzhen Guangdong China
Main Products: Gem Refractometer ,Gem Microscope ,Table Spectroscope ,Polariscope ,Diamond Color Grading Lamp

Product Details

 

Two switches of lighting FABLE professornal Refractometer

 

 FGR-002A with larger eyepiece

 

 

Description:

Material

Stainless Steel/CZ/Plastic

Testing Range

1.35-1.85

Accuracy

 <=±0.002

Light Source

Built-in Monochrome LED light

Power

Batteries/ DC 3V

Refractive Index Liquid

1.785±0.005

Scale Division

0.01 RI

Filter

Polarizing Filter

Packaging

Metal Box

 

Refractometer Instructions - Step by Step
LabelDescriptionInstructions
1Batteries

The first time you use your refractometer, insert batteries text up into battery case. Tightly close battery cover over batteries for good connection. Press power switch to turn on refractometer.

The refractometer takes 3, 1.5V button batteries.
Replacement Batteries: LR44 button batteries (Energizer® 357 Battery is one brand name.) You will find them in the watch / calculator battery section of drug stores, Wal-Mart, K-Mart, and probably your grocery store.

2HemicylinderOpen upper cover and examine hemicylinder. Hemicylinder should be clear of any dust or film from previous use or factory. If hemicylinder needs to be cleaned, use a little water and a soft cloth. Caution! Dried RI liquid can scratch the hemicylinder. If there is dried RI liquid on the hemicylinder, use a drop of RI to re-wet and dissolve any crystals that may have formed before cleaning.
3StoneExamine the stone to be tested under a bright light. Choose the facet with the best polish and largest surface. This is usually the table of the stone. Be sure the stone is clean, wipe with a soft, lint free cloth to remove any fingerprints or dirt.
4RI LiquidPlace a small (very small) drop of RI liquid on the upper end of the hemicylinder. Knowing how much RI to use takes some practice. You need just enough RI to create a good seal between the gem and the hemicylinder. As you test more stones you will learn how much RI is needed for the size of the stone.

5

Place StonePlace the facet of the stone you have chosen to test on the RI liquid drop and gently pull it to the center of the hemicylinder. Close upper cover if stone is small enough. For very large stones, leave cover open.
6Look through
eye piece
Look into eyepiece at about 4-6 inches away so that you can see the scale inside the refractometer. With practice, you will find the right spot to use for your eyes. You may have to hold your head closer or further away from eye piece depending on the stone and your eye sight.
7Be a snake charmer!Slightly move your head, up and down, side to side, and closer and further away from the refractometer until you see a blue-green flash line. (If you feel like a snake charmer, you are doing it right!) This line is usually in between the darker and lighter area on the scale. It is a light sort of teal color line. On bright, clear, clean, well polished stones, the line can be very sharp and clear. For other stones, it is very faint and hard to find. On stone that don’t have a good polish or flat surface, you may not be able to get a reading. If the scale appears dark all the way down to the bottom of the scale, then the stone’s refractive index is too high to read or you have used too much RI liquid.
8Take your readingRead the RI from the higher edge of the blue- green band. RI is read to the nearest hundredth place (eg. 1.65 )
9Use the chartCompare your finding with a Refractive Index Chart. There is one you can use near the bottom of this page.

Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepieceTwo switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece 

  Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece

 

 Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepieceTwo switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece 

Two switches of lighting FABLE professornal Refractometer FGR-002A with larger eyepiece

Contact Supplier

Ms. Celina K Chat Now
Telephone
86-755-89583846-809
Mobile
0086-15274875236
Fax
86-755-89583846-807
Address
Pinghu Shenzhen,Guangdong

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