Demeras Light Professional Refractometer Hand Held Accurate Refractometer Salinity Cutting Oil Fluid Refractometer For Seawater Aquarium(Cutting Fluid Tester 0 32%)

Demeras

[THREE TYPES]There are three types , cutting fluid testers in different ranges and salinometer that you can choose . Measure salt water or salinity of water , ideal for aquariums and marine monitoring . [WIDELY APPIICATION] The salinity refractometer is designed for aquariums , marine monitoring and measures salt water or salinty of water to help you to control concentration of salt water . [USAGE] Put 2 3 drops of sample solution after calibration on prism , towards light , then get the accurate readings . The salinity refractometer is ideal for replacement salinity hydrometers or expensive digital salinity tester . [CONVENIENT TO USE]Saline refractometer is made of fine material , anti rust , non staining and resistant abrasion , sturdy for long time use . Convenient to use , handle is comfortable to hold and non slip . Portable refractometer with plastic case easy to carry . [HIGH PERFORMANCE]This refractometer features high accuracy and easy operation . A professional measuring instrument , accurate test result . Easy to read by the clear calibration . Convenient to use , handle is comfortable to hold and non slip .