95% medicinal alcohol.
Operation steps: 1 rinse the bottle with water, with a small brush into the bottle brush. (2) put the glass bottle in the pot and blanch it with boiling water. 3. Dilute 95% medicinal alcohol to 75%, about every 100ml added to the distilled water of 25ml. Soak the glass bottle in alcohol for several minutes. Note: medicinal alcohol is transparent, color is industrial alcohol, industrial alcohol can not be used. Diluting the alcohol to 75% is because 75% of the alcohol is sterilized. 5 take out the shade and dry
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