1. Look: When choosing disposable paper cups, don't just look at the color of the paper cups. Don't think that the whiter the color, the more hygienic. Some paper cup manufacturers have added a lot of fluorescent whitening agents in order to make the cups look whiter. Once these harmful substances enter the human body, they will become potential carcinogens. Experts suggest that when people choose paper cups, they should take a picture under the light. If the paper cup appears blue under fluorescent light, it means that the fluorescent agent exceeds the standard, and consumers should use it with caution.
2. Pinch: the cup body is soft and not firm, be careful of water leakage. In addition, it is necessary to choose paper cups with thick and stiff walls. Paper cups with low hardness are very soft to pinch. After pouring water or beverages, they will be seriously deformed when they are lifted, or even unable to be lifted, which affects the use. Experts point out that generally high-quality paper cups can hold water for 72 hours without leakage, while poor quality paper cups will seep water for half an hour.
3. Smell: the color of the cup wall is fancy, be careful of ink poisoning. Quality supervision experts pointed out that paper cups are mostly stacked together. If they are damp or contaminated, mold will inevitably form, so damp paper cups must not be used. In addition, some paper cups will be printed with colorful patterns and words. When the paper cups are stacked together, the ink on the outside of the paper cup will inevitably affect the inner layer of the paper cup wrapped on the outside. The ink contains benzene and toluene, which are harmful to health. Buy paper cups with no ink on the outer layer or with less printing.
4. Use: Distinguish between cold cups and hot cups, they "each have their own duties". Experts finally pointed out that the commonly used disposable paper cups can generally be divided into two types: cold drink cups and hot drink cups.