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Best Choice Nandaga 
Alcohol Refractometer for Spirit Alcohol Volume Percent Measurement 0~80% v/v. Alcohol Volume Meter for Alcohol Liquor P 【Concentration Measurement Range】Turn the eyepiece to adjust the handwheel to make the blue and white lines clear. The sQUMOX 
QUMOX Refractometer for Brix Testing, 0-32% Scale with ATC, Ideal for Early-Stage sap Monitoring, Fruit Juice, Wine, and Single Scale Design: Measures Brix from 0–32%, ideal for low-sugar liquids such as fruit juice, wine, and sap.
Spirit Alcohol Refractometers High Accuracy Wine Alcohol Tester Measuring Tools One-Button Testing: Testing alcohol content is a breeze with this wine alcohol tester's one-button operation. You can coBest Value Jiawu 
Digital BRIX Refractometer 0-55% Brix Range, Handheld Pocket High Accuracy BRIX Meter, Digital BRIX Tester Sugar Content 【HIGH ACCURACY】Brix meter has built in excellent chip, high measurement accuracy, sensitive response, fast measurement s
Cat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0Yosoo 
Bee Tools Honey Refractometer 58-90% Sugar Content Beekeeping Portable Refractometer Honey Concentration Meter for Honey Precision Measurement: Sharp dividing line (blue-white), good readability (daylight recognizable), adjustable eyepiece fLICAEVEY 
Digital Brix Refractometer, 0‑55% Range High Accuracy Brix Tester Meter for Fruit Juice and Coffee Beverage Drinks Sugar HIGH ACCURACY: Brix meter has built in excellent chip, high measurement accuracy, sensitive response, fast measurement sRefractometers Great Material Beautiful For Home Open the cover plate, use a clean cloth to wipe the prism. Put the cover directly point to the light source or bright plFUTISKY Brix Refractometer with ATC,Digital Handheld Refractometer for Beer Wine Brewing, Dual Scale-Specific Gravity 1.000-1.13 Main body is made of aluminum and ABS rubber, sturdy design, anti-rust and resistant to abrasion and corrosion. OpticalSpirit Alcohol Refractometers High Accuracy Wine Alcohol Tester Measuring Tools One-Button Testing: Testing alcohol content is a breeze with this wine alcohol tester's one-button operation. You can coGeneric Refractometer for Sugar Content, 0-90% Range, ATC Function, Maple Syrup and Honey Testing， Bee Tools Honey Refractometer 【Precise Sugar Content Testing】This refractometer delivers highly accurate sugar content measurements, ranging from 0-90QUMOX QUMOX 3-in-1 Honey Refractometer for Moisture, Brix and Baume, 58–90% Brix Scale – No Battery Needed, ATC Optical Tester 3-in-1 Measurement – Quickly measures honey moisture content (12–27%), sugar concentration (Brix 58–90%), and Baume (38–Cat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0Zudoo Brix Refractometer, Portable Digital Handheld Brix Refractometer, 0 to 55% Range High Accuracy Brix Meter, Automatic Cal ★【FAST AND ACCURATE READINGS】: Digital Brix refractometer has built in excellent chip, high measurement accuracy, sensitCat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0AIMALL AIMALL Portable ATC Refractometer 0-32% Brix Tester for Sugar Fruit Alcohol Meter – Handheld Meter with Calibration Scre Precise Brix Measurements for Food and Industry The Portable Refractometer measures the Brix level from 0% to 32%, proviCat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0YUEHISY Digital Brix Refractometer for Fruit Juice and Coffee, Rechargeable Sugar Tester Mete with Auto Temperature Compensation WIDE APPLICATION: Digital brix refractometer is widely used in food, beverage, fruit sugar content determination, crop sCat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0Agriculture Solutions Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation, b Measure salt water or salinity of water, ideal for aquariums and marine monitoring.Cat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Health & Beauty. Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Scale range: 30~50%. You canGAIN EXPRESS Dual Scale Salinity Refractometer ATC 0-100ppt (0-10%) & 1.000-1.070 Specific Gravity, Portable Meter Tester for Seawate ✅Accurate Salinity Measurements: This optical refractometer accurately measures the salinity of seawater or low concentrCat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~015% Off Jaerb Salinity Refractometer, 0-100% Handheld Salinometer with Temperature Compensation Salinity Meter Hydrometer, Digital Ref 【ATC FUNCTION】Salinity refractometer with automatic temperature compensation with high- seawater salinity refractometer,Cat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0QUMOX QUMOX 0–80% Brix Refractometer for Sugar Content in Fruit, Juice, Honey, Syrup & Drinks – Optical Tester with ATC, No Ba Wide 0–80% Brix Range – Measures sugar content in fruits, fruit juice, honey, maple syrup, soft drinks, and other sugaryCat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0Diyeeni Diyeeni Digital Brix Refractometer, Digital Brix Tester with LCD, Automatic Temp Compensation Meter Refractometer, ±0.2% 【Broad Utility】: The digital Brix refractometer is a versatile tool, finding applications across various industries suchCat Dog Refractometer Refractometers Animal Clinical Refractometer 1.10~1.40kg/l Scale range: 1.10~1.40kg/l. Range of scale G13(Propylene Glycol): -50~0℃. Range of scale G11/G12(Ethylene Glycol): -50~0HHTEC HHTEC Refractometer 0-90% Brix Hand Refractometer for Determining The Sugar Content of Honey Vegetable Oil Syrup Molasse Use: it is suitable for measuring honey, opst, vegetables, condensed milk, vegetable oils, sugar syrup (syrup), fruit jaPortable Hand Held Grape And Wine Alcohol Refractometers 0-25% Vol 0-40% Bri NEW Turn the eyepiece to adjust the hand wheel to make the blue and white line clear. The scale value of the dividing line iFdit Alcohol Refractometer, Professional Handheld Alcohol 0-80% Test Refractometer Wine Tester Meter Measure Instrument 【Alcohol Content Measurement Tool Tester】Alcohol Refractometer designed for testing Spirit Alcohol Volume Percent, for BAtago PAL-1 Digital Pocket Refractometer Brix Sugar Meter Tester Japan Original QUMOX QUMOX 0–28% Salinity Refractometer with ATC, Optical Salt Meter for Sodium Chloride (NaCl) – Sea Water, Brine, Pickle, F Accurate Salt Measurement – Measures salinity from 0% to 28% with ±0.2% precision, ideal for testing salt levels in seawXUMIUZIY XUMIUZIY Digital Brix Refractometer, High Brix Tester for Determining Sugar Content, 0-55% Meter with Automatic Calibrat [Accurate Readings] Get accurate Brix measurements with the built-in high- chip for accurate results.MUNEFE MUNEFE Sugar Tester Refractometer, Digital Handheld Refractometer, 0~32% Brix Meter Refractometer for Measuring Sugar Co PROFESSIONAL MEASUREMENT INSTRUMENT:The sugar tester refractometer is a highly professional tool for accurately measurinGAIN EXPRESS 3-in-1 Automotive Battery Antifreeze Refractometer, -60~0°C Ethylene/ -50~0°C Propylene Glycol/ 1.100-1.400 Battery Flui 3 Scales in 1 : (1)Battery Fluids Specific Gravity (Density): 1.100 - 1.400kg/l ; (2) Ethylene Glycol Freezing Point: -6HHTEC HH Tec Wine Refractometer Salinity Refractometer 0 to 32 Brix (ZUKER) 0 140 Ochsle 0 27 KMW with ATC for Winzer Wine Bee An essential instrument for measuring grape juice for making quality wines. With the winemaker wine refractometer you caGAIN EXPRESS Alcohol Refractometer with ATC 0~80% VOL Volume, Optical Handheld Concentration Tester Meter for Distilled Beverages Win MEASURING RANGE : 0-80% v/v (Volume Percentage) DIVISION: 1% (0-60%), 2% (60-80%)Jectse Refractometer Concentration Meter Brix Tester 0-90% with Automatic Temperature Compensation, Simple Operation, Wide Appl Easy to use, sturdy refractometer is compact in size and light in weight, convenient to keep up and carry around.MTSDM MTSDM Digital Handheld Refractometer, Portable Alcohol Refractometer, Brix Refractometers, Hand-held Alcohol Content Mea 【Professional Measurement Instrument】: The sugar tester refractometer is a highly professional tool for accurately measuYosoo Wine Refractometer, 3 in 1 Hand Held Sugar Content Mearsuring Tool with Home Brewing Equipment for Beer Wine Fruit Sugar 【3 in 1 Wine Refractometers】3 in one hand held refractometers, with mesure range 0-25% Vol, 0-40% Brix and 0-22 Baume.TOPINCN TOPINCN BRIX Refractometer Dual Skala Messer for Sugar Brewing, Reliable Specific Difficult -Strength Evaluation, for Dr [Exact work] Enjoy precise results with automatic temperature compensationFdit Professional Brix Refractometer 0-32%, Sugar & Alcohol Tester for Beer, Wine, Juice, with ATC (10-30°C), Includes Case, Professional Measuring Instrument: Perfectly designed for accurately testing the Brix level of sugar in various liquids,16% Off FUTISKY Precision Salinity Refractometer for Seawater Aquariums, 0-100 PPT with Automatic Temperature Compensation, Aluminum All Constructed from an aluminium body and ABS rubber, the salinity refractometer is lightweight and extremely durable and cGugxiom Gem Refractometer, Jewelry Refractometer, RHG181 1.30-1.81 Professional Ldentification Gem Refractometer, Gem Portable R ABS MATERIAL: This gem tester is made of ABS material. This material is hard and wear-resistant, which can meet the operTOPINCN TOPINCN Brix Refractometer High Accuracy Brix Tester Meter, Suitable for Fruit Sugar Content Detection, PCB Material [BACKLIGHT DISPLAY] HD display offers clear visibility and supports three data display options.XRCLIF Honey Refractometer, XRCLIF Portable Hand Held Honey Tester with LCD Display(Baume:38-43°;Brix:58-92%;Water:12-27%), Sug 🍯【Wide Application】—the Refractometer can be used to measure the sugar content of various sauces and seasoning productsXRCLIF Honey Refractometer, XRCLIF Portable Hand Held Honey Tester with LCD Display(Baume:38-43°;Brix:58-92%;Water:12-27%), Sug 🍯【Wide Application】—the Refractometer can be used to measure the sugar content of various sauces and seasoning productsNotimin Notimin Alcohol Meter Refractometer Alcohol 0-80% Hand Refractometer for Spirits, Distilled Ethanol with Water Such as W The alcohol meter refractometer is used to measure the percentage of alcohol content of brandy, whisky, vodka, etc. NoteQUMOX QUMOX 3-in-1 Veterinary Refractometer for Urine Specific Gravity & Serum Protein – Dog, Cat, Pet Health Monitor, Optical 3-in-1 Veterinary Testing – Designed for animals, this refractometer tests urine specific gravity for dogs and cats, andXRCLIF XRCLIF High Precision Alcohol Refractometer 0-80% v/v, Hand-held Alcohol Content Measurement Tool, Portable Refractomete 💎【Wide Application】—the alcohol refractometer widely used in scientific research, food industry production, alcohol purNANBEI NANBEI 0-80% Brix Meter Refractometer, Refractometer Honey,Portable Refractometer for Honey,Digital brix Refractometer f Brix Range 0-80%, the reading resolution is 0.5 %.Brix Accuracy: +/-0.5%,large scale range makes it be suitable in widerGAIN EXPRESS Gain Express 6-in-1 Automotive Car Refractometer ATC for Adblue/Antifreeze/Battery Acid/Windshield Fluid, Coolant Charge 6 SCALES : (1) Battery Fluids, (2) Ethylene Glycol Freezing Point, (3) Propylene Glycol Freezing Point, (4) Cleaning FluGAIN EXPRESS 5-in-1 Automotive Battery Antifreeze Refractometer ATC for Specific Gravity, Ethylene Propylene Glycol System & Windshie Portable design & easy to use, with 5 clearly defined scales for the following 3 main uses:AIMALL AIMALL 3-in-1 58-90% Honey Refractometer Calibration Refractometer Honey Moisture Meter for Honey Moisture & Brix & Baum 🍯 Precision Measurement: Ensure the highest quality of honey with accurate moisture (12-27%), Brix (58-90%), and BaumeGAIN EXPRESS 0-28% Salinity Refractometer ATC, Sodium Chloride (NaCl) Salt Level Meter Tester, Test Kit for Sea Water Brine Seawater Accurately Measure Salt Concentration: Easily determine the salinity of water containing dissolved salt and minimal otheThermometer World Home Brew Hydrometer with Free 100ML Trial Sampling Jar - 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Digital Refractometer - Sugar, Brix, Salinity, Plato, Specific Gravity (SG) Wide measuring range (0 to 85 °Brix)Denash Digital Brix Refractometer, Temperature Compensation Function Easy to Use 0‑55% 3 Datas Display Brix Meter for Drinks fo HIGH ACCURACY: Brix meter has built in excellent chip, high measurement accuracy, sensitive response, fast measurement sBTER Gem Refractometer, Professional High Accuracy Jewelry Gem Refractometer Quick Identification 1.30 to 1.81 Measuring Rang 【JEWELRY GEMSTONE IDENTIFICATION TOOL】The primary use of this gem refractometer is to measure the angle at which light iRESFNSE RESFNSE Refractometer with ATC Dual Scale Specific & Hydrometer in Wine Making and Beer Brewing Homebrew Kit 3.Consistently accurate readings of 0-32% and 1.000-1.120 Specific .Generic Generic Brix Refractometer Meter Dual Scale Measure Tool, Specific Gravity 1.000-1.130 with ATC, Ideal for Sugar Brewing [High-quality Material] Made of non-staining, non-corrosive, and non-reactive abs material for hygiene and safety duringXRCLIF Juice Refractometer Hydrometer with ATC, Brix Reader Meter Refractometer, Brix 0-32% Measuring Sugar Content in Fruit, S 🍓【Easy to Use】— Place 2 - 3 drops of liquid sample onto the prism of this brix refractometer, then look through the eyeTOOGOND Professional Salinity Refractometer,Salinity Tester, Salt Tester for Saltwater Pool, for Saltwater Aquarium, Pools, and Salinity Refractometer：This refractometer measure salt water or salinity of water, ideal for aquariums and marine monitogernie Digital Brix Refractometer, 0‑55% Range High Accuracy Automatic Calibration Brix Tester HD Backlight Display Portable Ha WIDE APPLICATION: Digital brix refractometer is widely used in food, beverage, fruit sugar content determination, crop sEacam Diacaustic Instrument, Eacam Portable Handheld ATC Alcohol Refractometer Liquor Volume Percent Tester with 0-80% Measuri 💖 Handheld design and non-slip rubber handle for easy operation. Great for measuring the volume percent of alcohol liquNDNCZDHC Antifreeze Refractometer, Glycol Refractometer Car Antifreeze Battery Acid Engine Coolant Tester Tool RHA-503ATC High quality material can make sure the durability and stability of the refractometerBewinner Bewinner Honey Refractometer 0-90% Handheld Pocket Sugar Concentration Meter with ±0.2% Brix ±0.3°C Accuracy for Honey Q Elegant color and stylish design, compact size and portable, easy to carry anywhere and anytime.XRCLIF Frost Protection Refractometer, 4-in-1 Antifreeze Tester, Coolant Tester, Refractometer for Checking The Freezing Point 🚗【4-in-1】 - If you find that the battery of your cars, solar system or heat pumps is no longer durable, do not hurry toYUEHISY Digital Refractometer, 0 to 55% High Accuracy Sugar Tester Meter with HD Backlight Display, Automatic Temperature Compen WIDE APPLICATION: Digital sugar degree refractometer is widely used in food, beverage, fruit sugar content determinationLuqeeg Brix Refractometer 0~80%, Digital Refractometer, Handheld Sugar Refractometer for Measuring Sugar Content in Fruit, Hone GAIN EXPRESS Clinical Refractometer with ATC, Tri Scale Serum Protein/Urine Specific Gravity/Refractive Index, for Veterinary Dog Cat Human clinical refractometer 3-in-1 testing of Serum protein, Urine specific gravity, and Refractive indexGAIN EXPRESS 0-10% Brix Refractometer with ATC Low-Concentrated Sugar Content Solutions Accuracy 0.1% Maple Sap Cutting Liquid CNC Ma Measuring Range: 0~10 %Brix with 0.1% division and ±0.1%Brix accuracyEacam Eacam Salinity Refractometer Handheld Seawater Hydrometers Optical Salinity Tester Portable ATC Refractometer 0-100‰ & 1 🔷 Handheld design and non-slip rubber handle for easy operation.Built-in automatic temperature compensation(ATC) to getHIKOAN HIKOAN Salinity Refractometer Handheld Seawater Hydrometers Optical Salinity Tester Portable ATC Refractometer, Dual Sca Measure salt water or salinity of water, ideal for aquariums and marine monitoring.XinJiaYi XINJIAYI Water Salt Refractometer, Hydrometer with Two Scales: Specific Gravity 1,000-1.070 and PPT 0-100, Handheld Sea Easy to use: Put 2-3 drops of a liquid sample on the prism of this hydrometer and then look through the eyepiece to getRASTKY Bee Tools Portable Honey Refractometer 58-90% for Sugar Content, Water Content and Baume, Suitable for Honey, Condensed [PORTABLE COMPANION] A useful portable honey concentration meter, allowing you to read your sugar content conveniently aOshhni Oshhni Jewelry Refractometer Accessories Lightweight Professional with Flashlight Refractive Measuring Portable for Jewe 【Complete Kit】: The Gem Refractometer Kit includes a refractometer, a flashlight, reflective oil, an instruction manual,Continuum Aquatics Continuum Reagents Refractometer Calibration Standard, Provides an Accurate Reference for The Calibration of seawater re 35 ppt salinityDANAIXZ DANAIXZ Professional Gemstone Refractometer RHG181 High Accuracy Portable Jewelry Refractometer for Gemstone Identificat [HIGH PRECISION GEMSTONE ANALYSIS] This professional gemstone refractometer is specially designed for measuring the refrCCJZBCAU Brix Refractometer for Brix Testing, Professional Handheld Alcohol, Aluminium Honey Refractometer with Digital Display, Premium Quality Texture: It is crafted from premium quality texture, which is sturdy, with stable structure, and can witHaofy Honey Refractometer Brix Refractometer 58-90% for Honey Test, Fruit, Beer, Wine and Sugar Test Aoaoy Aoaoy Gemstone Refractometer, Gemstone Refractive Index Meter, 22X11X8, Rhg181, 1.30-1.81, Professional Identification R The application of this refractometer is to measure the refractive index of gemstones and solid materials. 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Helps identify diamonds, moissanite and cgernie Alcohol Refractometer, Refractometer for Spirit Alcohol Volume Percent Measurement with Automatic Temperature Compensati A professional measure instrument to test alcohol concentration of liquorHXTDBY Portable Refractometer with Automatic Temperature Compensation (ATC), Alcohol Refractometer Brix Refractometer (Beer Ref Portable refractometer with Automatic Temperature Compensation (ATC)SDEESS Refractometer, Newest Handheld refractometer Refraction Tools 58~92% 38~43 Be Baume Honey Water Contents (12-27%) Refrac [ Honey Refractometer ] Design to test sugar content (range up to 92% ), Baume and Water concentration. It can also measDomary Refractometer Sugar Test Meter 0-20% Accurant Index Automatic Temperature Compensation Portable Refractive Concentration [Accurate Refractive Index] The refractometer provides precise readings based on different liquid refractive indexes, enMEKOTRIN MEKOTRIN Digital Brix Refractometer, Brix Tester 3 Datas Display Temperature Compensation Function 0‑55% for Sugar Conte EASY TO USE: Sugar degree meter refractometer is equipped with a high transmittance refractive prism, and the liquid canTRZ Beekeeper Refractometer Honey 12-27% Water Honey Moisture 58-90% Brix Sugar Baume For Beekeeping Honey Condensed Milk Su YaSao Salinity Refractometer Handheld Seawater Hydrometers Optical Salinity Tester Portable ATC Refractometer, Dual Scale: 0-1 RGBS Refractometer for Dogs and Cats for Pets Urine Specific Weight (1000~1060) Clinical Refractometer with Serum or Plasma P Clinical Refractometer - This refractometer can measure urine-specific gravity and serum protein immediately for cats anFUNFANG FUNFANG Handheld Brix Tester High Accuracy Sugar Detector Portable Refractometer for Food and Beverage Testing [Lightweight and Portable] Easy to carry and use anywhere, perfect for laboratories, production lines, or outdoor enviroQingeer Seawater Salinity Refractometer Portable Handheld Salinity Meter ATC Salinometer Aquarium Halometer Salt Gauge Saltwater With highly efficient and accurate, the salinometer has measuring range of 0~199.9ppt and +/- 2%F.S accuracy.Diewu Diewu 3-in-1 Handheld Honey Refractometers for Honey Moisture & Brix & Baume Beekeeping Honey Refractometer Water Conten 3-in-1 design, is refractometer has a measuring range of 58% to 90% Brix, 38 to 43 Be' Baume, and 12% to 27% water conteJoyzan Joyzan Antifreeze Refractometer, Frost Protection Refractometer ATC for Glycol Coolant Battery Acid Tester Checking The Car Owners’Helper: This antifreeze tester helps measure the specific gravity of battery acid and then provides a quick rPlyisty Refractometer with ATC, RHB-10ATC Digital Handheld 0-80% Meter, 0.1% High Accuracy Refractometer for Beer Wine Brewing The refractive index made according to different refractive index of the liquid is very accurateKRYZON Brix Refractometer 0-90%, Brix Meter Refractometer with ATC, Accurate Refractometer Sugar Maple Syrup, Refractometer Bri 🍯【Easy to Use】— Simply place 2-3 drops of liquid sample onto the prism, then look through the eyepiece for an instant r15% Off TOMVAES Handheld Salinometer Measuring,Salinity Refractometer,Salinity Meter,for Seawater, Fish Tank, Aquaculture,Fishkeeping,Ea [Easy to use] - Lightweight and portable, handheld design, easy to use.Domary Domary Salinity Refractometer Handheld Seawater Hydrometers Optical Salinity Tester Portable ATC Refractometer, Dual Sca Handheld design and non-slip rubber handle for easy operation.QANYEGN QANYEGN Salinity Test Refractometer, Seawater Refractometer, Seawater Salt Water Test Kit for Aquariums, Marine Monitori ACCURATE MEASUREMENT OF SALINITY: The Salinity Refractometer measures salinity from 0 to 10% on a 0.01% scale, ensuringSDEESS Refractometer, 0-75% VOL Auto Alcohol Refractometer For Alcohol Measure Tool 0.1% VOL Resolution Digital Hydrometer Conc Sample size : 0.3mLYHUEGH Gemstone Polarizing Filter Gem Refractometer Gemstone Refractometer Kit Portable Gem Tester Gemstone polarizer / Jewellery identification instrument / table polarizer / crystal gem identification instrument / intHXTDBY Antifreeze Refractometer 4-in-1 Antifreeze Tester Coolant Refractometer Ethylene Propylene Glycol Refractometer for Chec 4-in-1 Refractometer - designed for checking battery acid condition of your cars, solar pant or heat pumps. RefractometeMAEBLA Handheld Brix Refractometer 0–90% with ATC – Sugar Content Tester for Honey, Syrup, Jam, Fruit Juice, Vegetable Oil – In ✔ Wide Measuring Range (0–90% Brix): Ideal for testing sugar levels in honey, fruit juice, syrup, jam, vegetable oil, anPODSJD Salinometer Refractometer Food Salinity Tester Meter 0-28% Range Clear Calibration - Accurate Reading, Automatic Tempera [Accurate Salinity Testing]: Measures food salt concentration precisely with a 0-28% range and 0.2% minimum scale for reDISHENGZHEN Refractometer Gem Refractometer，with Refraction Oil Jewelry Identification Instrument Distinguish Tools Jade Stone Refra Specially designed for measuring the refractive index of gemstones and solid materials.