1. Feature & Use Refractometer is a precision optical instrument, featuring in simple use, accurate measurement, light weight, small volume and etc. By using this instrument, it can measure percent concentration of M-10 and MDT, the two kinds of emulsion for mining area accurately, and also provides convenience for preparing hydraulic accurately in industrial and agricultural scientific research. 2. Main technical dataMeasuring range: 0~15%Division value: 0.2Demension and weight:40*40*200mm 3. Part of the instrument Division prism Cover boardBenchmark calibration screw Pancratic eyepiece(definition) Feature: By using this instrument, it can be measured the universal two kinds of mine emulsion's percent concentration accurately: M-10 and MDT, and also provides great convenience for exact preparing hydraulic emulsion. It was widely use in industry, agriculture and scientific research. 4. Using method Let the deviation prism point to the light, adjust the visual ring till the gage mark becomes clear.Adjustment benchmark: Before using, pls keep the standard liquor (purified water), instrument and liquid under measurement at the same temperature.Open the cover plate and apply 1~2 drops of standard liquor onto the diviation prism, and then use hand to press the cover plate lightly to get a dividing line. Turn the calibration screw to coincide the dividing line with the benchmark (0%). The one for honey will be an exception.Note: The instrument has been calibrated before delivering, you are allowed to use it directly. Open the cover plate and use the soft rag to clear the surface of prism: apply 1~2 drops of liquid under measurement onto the deviation prism and close the cover plate to press lightly; afterwards read the relevant scale for dividing line; the reading will be the concentration value and destiny value of the liquid under measurement.After measuring, use the wet rag to clean the prism and cover plate; when it becomes dry, please store the prism safely. 5. Precautions & Maintance After using, please do not use the tap water to clean directly; Otherwise the water may go into the pipe of optical systerm. When using or maintaining, please handle with care and keep the surface of optical parts away from scratch or demage.The prism that will be contacted with the object under measurement is an easily –consumed product, which can not be recovered, pls understand. Users are required to follow the methods said above; If the instruments is demaged since misconduct or operation in error, we shall not bear the warranty responsibility. 6. The instrument will be packaged into the special box, with the accessories (i.e.:Using Instruction For Use; Screwdriver, Suction pipe and lint) 7. Warranty period: The product will enjoy the warranty of one year and maintenance for whole service life. 8.Detail Company Information FAQ Q1: Why choose us?A: 1. We have our own factory with strong R&D center and QA team which can make sure your goods can be sent out on time and in superior quality. 2. We have experienced and dedicated core members to offer you professional and reliable before-sales and after-sales service.3. We have purveyed customers with the lowest wholesale price. Q2: How do you guarantee the quality?A: One year's guarantee from date on B/L. Normally. If it's quality problem, we promise to return goods or funds. Q3: Is OEM available?A: Yes, all goods can be custom made by your requirements, including packing, LOGO print, etc. Q4: Can we buy 1 pc for sample testing?A: Yes, we are glad to send 1pc for quality testing if we have stock of the model you required. Q5: How to deliver the goods for trial order or small order?A : For small order, we prefer to choose international express, such as DHL, TNT, EMS which are faster and more convenient for customer. Also, we cooperate with an express agent that can give us a big discount for express fee which is much lower than that quoted by official. For the goods with detachable battery, the express fee can be lower down if the goods is sent out without battery. Q6: What kind of payment your company accept?A : T/T , WEST UNION , PAYPAL , ETC. Q7: If we have not found the model from website, what should we do?A: Please email us with description and picture of the product, we research and develop new model every month, and some of them maybe have not been uploaded in website immediately. But If this is a new products for us, we can develop it for you after get all detailed information about your product.