1. Place a few drops of the liquid on the main prism. 2. Cover the prism,look through the eyepiece against the light. 3. Adjust the eyepiece to the clear state. 4. You can read the result value on the scale. 1) 1 x refractometer 2) 1 x pipette 3)1x instruction manual 4)1x mini screw driver 5)1x cleaning cloth ProductSiteLaunchDate : 2024-09-24T06:12:49.444Z Size : 1 UnitCount : 1 UnspscCode : 27110000