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Instrument structure：

The refractometer is designed according to the principle that different concentrations of liquid have different refractive index，It’s fast、accuracy、Light weight、Small size and other advantages。

measuring range ：0-32%

Minimum scale：0.2% Instrument accessories：A refractometer，A straw，A screwdriver，A piece of flannel，A packing box，Explain a copy，One warranty card

usage method：

Open the cover（3），Wipe the test prism with a soft cloth（2）。Drop number of solution to be measured，Placed on the detection prism，Close the cover gently，Avoid bubbles，Spread the solution over the surface of the prism。Light in the instrumentplate（3）Aim at the light source or bright spot，The eye observes the field of view through the eyepiece，Turn the eyepiece adjusting hand wheel（6），Make the blue and white line of view clear。The scale value of the dividing line is the concentration of the solution。

matters needing attention：

1.Care must be taken in use，Use in strict accordance with the instructions，It is not allowed to loosen the instrument at will, and the connecting parts of the instrument shall not be collided, and violent vibration is strictly prohibited。

2.After use，It is strictly forbidden to put it into water for cleaning，Wipe with a clean soft cloth，The optical surface should not be damaged，Scratch。

3.The instrument should be kept dry、Keep in a place without corrosive gas。

4.Avoid the loss of spare parts。

The instrument has been calibrated before delivery，It can be used directly

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