Sugar Meter Hand Held Refractometer Fruit Sweetness Tester LB32T Fruit Style (copper Core Material Quality Range 0.2 ~ 32%) Welding Machine It can effectively prevent the

It can effectively prevent the fuselage from falling from a height

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more professional and precise

High precision

to meet different needs

Sugar Meter Hand Held Refractometer Fruit Sweetness Tester LB32T Fruit Style (copper Core Material Quality Range 0.2 ~ 32%) Welding Machine It can effectively prevent theShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Open the cover and wipe the detection prism carefully with a soft cloth Take a few drops of the solution to be tested and place them on the detection prism. Close the cover plate gently to avoid bubbles and make the solution spread all over the surface of the prism. Aim the instrument light plate at the light source or bright place, observe the field of view through the