Item Description: Refrigeration Oil Refractometer - 1.435-1.520 Refractive Index Refractometer (nD) with Automatic Temperature Compensation ("ATC") used for measuring the quality of Refrigeration Oils THIS IS THE BODY STYLE OF THE UNIT Refrigeration Oil Refractometer Specs: Refractive Index Scale: * Scale Range: 1.435-1.520 nD * Divisions: 0.001 nD * Accuracy: +/- 0.001 nD% * Automatic Temperature Compensation (ATC) Range: 50-86'F/10-30'C Included are: A 1.8ml Vial of 1.442 Refractive Index Calibration Fluid, a sturdy plastic hardcase, a calibration screwdriver, a pipette for dropping test fluids onto the prism, and a Users Guide Calibration: Calibration can be done turning the Calibration Screw on the top of the unit using our 1.442 Refractive Index Calibration Fluid. A 1.8ml vial of Calibration Fluid is $18.99 per vial (amber color with an applicator rod in the cap). A 1.8ml Vial comes with the unit, but extra vials can be purchased as needed. Ours comes with a THREE YEAR WARRANTY! One BRAND NEW Refrigeration Oil Refractometer Hand held Refractometer in a plastic hard case. The Refrigeration Oil Refractometer uses ambient light, no battery or power source is required. This unit is a precision optical instrument that allows for the rapid and accurate determination of the refractive index of liquid solutions. It will specifically assist in determining the percent residual of oil remaining in a refrigeration system when converting it to a new refrigeration oil. Such retrofits require converting the mineral oil to a polyol ester (POE) or polyalkylene glycol (PAG), an alkylbenzene lubricant (Zerol) to a POE, or a mineral oil to an alkylbenzene. International Shipping: World via USPS Global Priority is $15.00, $12.00 to Canada For LARGER orders, please check out our Store! We have as many as you need! Click the Tag------ or go to www.nisupply.com When you can find this item, it generally sells for $399.95 and up at most retailers. Get yours today at Wholesale prices! Other types of Portable Refractometers are available through our Store! You can always get to our Store via www.nisupply.com too. National Industrial Supply 30777 Rancho California #891420 Temecula, CA 92589, USA Sales: 951.308.9269 Fax: 310.833.7306 We prefer Paypal! Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, Marketing, listing Apps, Apps, Application After purchasing, pay instantly with your credit card through PayPal!