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Although ordinary glass may also contain very small amounts of lead, it will not cause harm to health under normal use. If you are concerned, soaking the ordinary glass tableware in vinegar water before the first use can help to leach out the lead. It is best to use ordinary glassware to hold acidic drinks or foods, and try to avoid using lead-containing glassware. Although ordinary glass may also contain very small amounts of lead, it will not cause harm to health under normal use. If you are concerned, soaking the ordinary glass tableware in vinegar water before the first use can help to leach out the lead. It is best to use ordinary glassware to hold acidic drinks or foods, and try to avoid using lead-containing glassware.