Buy 20 boxes of ballpoint pens but expired more than half a year, how to calculate the shelf life of ballpoint pens

[Office Partner Information Center] Two days ago, Mr. Shi bought 20 boxes of ball-point pens at a supermarket in Yongkang. After buying them, they found that the pens were out of date. I heard that the food will expire, will the ballpoint pen expire, and the shelf life is still so short?

Two days ago, Mr. Shi bought 20 boxes of ball-point pens in a supermarket in Yongkang. After buying them, they found that the pens were all expired. The production date indicated on the box is July 2012, and the shelf life is only two years.

I heard that the food will expire, will the ballpoint pen expire, and the shelf life is still so short?

Mr. Shi lives in Ningbo and comes to Yongkang. Just son and kindergarten activities, to send stationery to children in poor mountain areas, Mr. Shi thought of buying a pen. On March 23, he came to a supermarket in Yongkang, valued a ballpoint pen, spent 264 yuan, and bought 20 boxes. I didn't expect to buy it back and see that these ballpoint pens are out of date. "At the beginning of writing, it was intermittent, and it was not smooth at all. After a few times, it returned to normal." Mr. Shi felt that the supermarket sold such an expired ballpoint pen, which was irresponsible.

Later, he made a complaint to the local 12315 and found the relevant person in charge of the supermarket. After the intervention of the staff of the Market Supervision Bureau, things were immediately resolved.

The person in charge of the supermarket admitted that the ballpoint pen has indeed expired. While apologizing to Mr. Shi, he promised to return all ballpoint pens and pay Mr. Shi 400 yuan as compensation.

Mr. Shi is also satisfied with the results.

Many people are also curious, the ballpoint pen also has a shelf life?

The reporter interviewed several stationery stores at random, and the stationery store owner said that he did not know: "If you can write, you can't write it, it means useless. What is the shelf life?"

However, the reporter then checked the relevant information and found that China's GBT26714-2011 standard clearly stipulates: the ballpoint pen and refill should be stored in a dry and well-ventilated warehouse, storage temperature 0 °C ~ 40 °C, relative humidity is not more than 80%; ballpoint pen And refill shelf life: two years from the date of manufacture.
Hu Jiping, a chemistry teacher at the First Middle School of Jinhua City, told reporters that the ballpoint pen expired very often: "The time is long, the oil of the ballpoint pen will volatilize and dry out, which may cause the nib to be blocked, so the ballpoint pen will inevitably have its shelf life."
In addition, Teacher Hu also said that in fact, many daily necessities in life also have a shelf life. "Paper towels, disposable cups, etc., although they don't change much on the surface, but after a long period of time, they will expire." Hu said that only people usually don't care about the shelf life of this product.

Teacher Hu suggested that when you buy such goods in the future, you should also keep an eye on the shelf life. "Especially those products that are intimately in contact with the body, the expiration of the use of more, will inevitably cause some harm to the body."

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