Our refractometer can measure the salinity quickly and accurately, ideal for agriculture, industry and research application, such as mariculture, fish culture, aquarium, marine survey, water quality monitoring, manufacture of normal saline, salinity measurement in food processing etc. Operating procedures: 1. Open the cover and clean the detection prism with a soft cloth. 2. Take the test solution, place it on the detection prism, gently close the cover to avoid air bubbles, and make the solution spread over the prism surface and put the instrument into the light plate. 3. Align the light source or the bright area, observe the field of view through the eyepiece, and turn the eyepiece to adjust the handwheel. 4. Make the blue-white boundary of the field of view clear, and the scale value of the boundary is the concentration of the solution. Specification: Condition: 100% Brand New Material: Aluminum, Rubber Color: Shown as Picture Measuring Range: 0-100% Salinity Accuracy: ±1% Length: approx. 19cm/7.48in Weight: approx. 241g/8.5oz Package list: 1 * Refractometer 1 * Pipette 1 * Screwdriver 1 * Wiping Cloth 1 * Instruction Note: 1. Please allow small size error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

Non-slip Handle: The rubber handle is non-slip and comfortable to grip. Accuracy: Features automatic temperature compensation and high accuracy. Easy to Use: The handheld refractometer is easy to use and can measure the salinity quickly. It is more accurate than a hydrometer and easy to measure. Best Material: This salinity refractometer is made of Aluminum construction is lightweight, wear resistant and durable.

Date First Available: May 6, 2019. Best Sellers Rank: #324,922 in Pet Supplies. Customer Reviews: 5.0 out of 5 stars 4 ratings 5.0 out of 5 stars. : B07RGJ8YLF. Batteries Required?: ?No. Batteries Included?: ?No. Included Components: ?Inc. Item Package Quantity: ?1. Installation Method: ?InstallationMethod. Voltage: ?1 Volts. Power Source: ?PowerSource. Material: ?Material. Finish: ?Finish. Product Dimensions: ?0.39 x 0.39 x 0.39 inches. Item Weight: ?8.4 ounces. Part Number: ?EBTOOLSy6tgbiukvf. Manufacturer: ?EBTOOLS.