-n. 1 calibration prism with polished and matt surface
-n. 1 small bottle of dioptric oil
23 Item Items
Warning: Last items in stock!
Put a drop of oil on the polished surface of the prism and place it with this surface in contact with the refractometer, while the opaque surface must remain at the top, resting on the mobile door closing the refractometer.
Looking at the refractometer, use the supplied screwdriver to match the blue band with the value 19.2.
At the end of the operation, clean the surface of the refractometer very well with the cloth supplied or with scottex paper.
Never use water to clean the refractometer.
Never use distilled water to calibrate the refractometer but only dioptric oil.
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