Precautions For Plaster Oil Refining

Take the above-mentioned medicated oil and continue to refine it. When the temperature of the oil rises to 320 degrees (the temperature must be reached, it is critical), switch to medium heat. The temperature of oil refining: one is to look at the thermometer to reach the specified temperature; the second is to look at the oily smoke, which is light cyan at first, then becomes darker and thicker, and then becomes thick white smoke. When there is no wind, the white smoke goes up straight; At that time, the oil flowers are mostly near the periphery of the pot wall. When the oil flowers gather in the center of the pot, it is a degree. (This level is the most difficult. It must be refined until the dripping water becomes pearls, and fire prevention must be paid attention to. The temperature is too high)