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Location: Oregon City, Oregon, United States
Ships to: US,
Item: 320419030468
Condition:New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is … Read moreabout the conditionNew: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller’s listing for full details. See all condition definitionsopens in a new window or tab
ADE ADVANCED OPTICS:ADE ADVANCED OPTICS
Type:.
MPN:Does Not Apply
UPC:717029487094
eBay Digital Gem Refractometer Our Digital Gem Refractometer is a accurate optical instrument which will give a reading of the refractive index of a clean, flat, well-polished facet to reproducibility of 0.007RI index units. This digital refractometer cover the full range from 1.40 to 2RI, The normal oil type refractometers range is usually 1.30 to 1.81, which have only half of the range of this New product! If you want to test gems which has higher IR above 1.81, then you have to use this digital refractometer. It is an ideal instrument to identify the gem stones. It test the gem stones without requiring ANY messy, damaging contact oil. Features: RI Test Range: 1.40 to 2.00RI Power Input: 9V Battery Work Temperature: 25-28celsius/77-83fahrenheit Unit Weight: Approx 750grams in box with accessories Guarantee compare the retailing price over 800 US dollar. Specifications: No need for expensive, messy liquids that constantly need replenishing Unit Dimensions: 105x60x35mm Unit Weight: Approx 9.5 ounces Gives a reading in less than half a second. How to Test Double Refraction Gem: Turn the gem in the same direction through small increments, you can read the two refractive index values of the light vibrated at right angles to each other. Operate continuously until the gem is at 180 degree position to its initial position. From a number of groups of measured refractive index values you can find a group with the difference of maximum refractive index and minimum refractive index. The difference is the value of index of double refraction of gem. We recommend that every gem be tested two or more times, adjusting the position slightly by shifting the stone left or right or up or down, not rotating it. Do not move the stone too far off center. If all the readings are consistent in all positions, it is then know that the stone is well cut and a correct index is being read on the meter. Accessory included: Instruction manual Gem Cleaning cloth Storage Case Free Standard stone sample (1.4875RI) Free Standard stone sample (1.7552RI) 9V Battery included. Refractometer Index Reference List (For more than 200 common gemstones, i.e. Calcite, Jadeite, Quartz etc.) Very Important: For first time use, there is a 4 step calibration which only takes 60 seconds to complete. User only needs to do the calibration once when they first use it or after being stored for a long time(months) 1: The best circumstance temperature is between 25-28celsius/77-83fahrenheit 2: the stone’s contacting face must be polished well and have at least 3mm flat surface 3: The stone’s contacting face must be very clean 4: the stone was placed well on the center of the testing plate. Please note that the instrument’s min scale is only 0.01RI. The third digits after decimal is just for reference, not correct or final reading. When the stone was moved (in different direction) to test, the stone must be sure to be placed well on the center of the testing plate. If the testing result from the screen only changes in the third digits after the decimal, the second digit is stable, it means the result is CORRECT. If when moved in different directionS, the reading from the screen changes largely(always getting lower), the first or the second digits after the decimal changes, than the stone was not placed well, or the stone’s polishing face was not flat. Warranty: 3 years warranty in United States. Our goal is to place a profit margin of $1 ~ $3 per item and sell in volume. As such, the more you save the more we make. While the others are selling 1 item, we are selling 10 ~ 20 items due to our price reduction. Payments are accepted through Paypal. We ship from Oregon within 1 business day after received payment. We promise our best quality and the lowest price for our customers, if the item is not as the same as the description in the listing page, we will issue a exchange or full refund. if the item is the same as the description, we will charge a 15% restocking fee. We are a new seller on Ebay, all our prices are really low compare to others, because we want to earn feedbacks. Please understand our feedback will be left once after we have received feedback from buyer. Please use the “Ask Seller A Question” button. Please allow up to 24 hours for a response. Usually the buyer will get response in 6 hours. Customer Satisfaction • Please contact us right away (via eBay Messages) if you have any concerns, questions or issues about your purchase – and before you leave feedback. • If you give us the chance, we will make every effort to make it right for you! • We strive for five stars from you in feedback – and work hard to earn it. • Customer satisfaction is very important to us and our goal is to have every customer want to be a repeat customer.
Frequently Asked Questions About ADE Digital 1.40 to 2.00 range Gem Refractometer Gemstone, No Oil required. in My Website
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