"This jade is a fake. The sheen on its surface depends on this coating. It should be plastic."

Chen Lao Po, a citizen, bought jade from Yunnan for over 2000 yuan.

Yesterday morning, the eight departments of the Municipal Quality Supervision Bureau, the joint municipal Party Committee Propaganda Department and other departments held the "quality month" square public welfare activities in the city square in 2011. Many citizens came to inspect the jade and diamond ornaments at home.

Spot detection of blood swallow, nitrite height exceeding standard

At the scene, a mobile inspection vehicle is very popular with the public. Whether it is alcoholic beverages, condiments, edible oil, rice flour products, beverages or blood swallow, it can be carried out quickly.

Mr. Yeh from the family brought a box of blood swallow from his home. "The news report said that the blood swallow's poor quality bird's nest was made, and the nitrite contained in it was seriously exceeded."

The worker dissolved a small piece of blood swallow and adjusted it with special reagents. After 15 minutes, the result came out: nitrite was as high as 1000mg/kg.

What is this concept?

The relevant national mandatory standards strictly restrict the addition of nitrite, with only a small amount of residue left, with a limit of 30mg/kg.

According to this limited standard, Mr. Ye's question of inspection is in bird's nest.

The reporter understands that the mobile inspection vehicle will provide free testing in urban area square around 15 days a month.

This year's "quality month" square public welfare activities, in addition to providing on-site consultation, inspection and service manuals for the public, also launched a "strong quality, integrity and development" hundred enterprises initiative and public commitment activities, 24 excellent food enterprises, large shopping malls, professional market for quality products and services display, products have beverages, flour, wine, dairy products and so on.

Many enterprises have propagandize their reputation in quality as "gold lettered signboards" to consumers. Some enterprises will print on the leaflets through the words of the ISO9000 quality system certification. Some enterprises that pass the 3C certification and obtain market entry qualification will put the products labeled "3C" and "QS" in a prominent position. Some enterprises' staff also voluntarily teach consumers the way to identify fake and inferior commodities.

An old woman said, "I didn't understand this knowledge before. I heard some explanations from my staff today, and I finally learned some skills to distinguish genuine and fake products."