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Things that, it turns out, have a shelf life. And it is worth considering!

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We all know that products and things have a strictly defined shelf life , and its violation can seriously harm your health or the health of your loved ones. But there are other things that we use every day, but at the same time we don’t even think that their shelf life is also limited. We always remember that we need to check the shelf life of milk, monitor the safety of cosmetics, but ignore the huge number of items that surround us sometimes longer than it would cost. We propose to conduct an audit where it is needed no less than in the refrigerator.

Running shoes

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Making a decision about the need to buy a new sports shoe - we often focus on the fact that the old pair of sneakers are worn out or look bad. But few people think about the fact that even if the sneakers look well-preserved - anyway, they could already lose their “sport” shape. And this is especially important for running shoes.

Studies show that after an average of 500 kilometers of running, sneakers lose their cushioning properties, which means an excessive load on the joints.

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Dmitry Krasnoyarov, Product Manager, Footwear: Of course, there is a direct effect of wear on the shock-absorbing properties of any shoe, and especially sports. With constant use, any technology loses its original properties. Professional athletes usually have in their stock more than ten pairs. The influence of weather conditions, surface types, and many other factors determine the choice of an athlete in favor of the appropriate model.

It is impossible to completely eliminate the load on the joints, but with the help of advanced technologies it can be significantly reduced. For example, now there are innovative materials that have durability and wear resistance. Such shoes, if used by a layman, can be changed no more than once every three years.

Potato

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At first glance, it seems that everything is simple and clear with potatoes: if it is not spoiled, then you can eat. But in fact, everything is much more complicated and serious. Potatoes may contain substances harmful to humans: toxic chemical solanine. Ordinary potatoes contain its minimum amount and it does not harm anyone.

But a completely different thing is potatoes, which have been stored for a long time, began to turn green or sprout. In the "elderly" potato the level of solanine grows so much that it already becomes dangerous to human health.

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Damir Yarlushkin, expert: Solanine is an alkaloid of plant origin, which is formed in potatoes and other plants of the solanaceous family (eggplant, tomato, vegetable pepper, tobacco) along with chlorophyll when it hits light on the plant. Thus, plants are protected from insects and animals. But dangerous solanine can be for people.

If the potato "turned green" by less than a quarter, then there will be no great harm to the body from eating it, but you need to peel such potatoes by cutting off a thicker layer of peel, since the main concentration of solanine is in it. To the solanine in the potato was not formed, it must be stored in places without access of light.

Surge Protectors and Voltage Regulators

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One of the most unexpected things on our list is network filters and stabilizers. They are designed to work under a certain load and can only pass a limited number of Joules through themselves, after which they start to fail.

This is especially dangerous because the operation of surge protectors that have expired can end in fire.

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Ilya Sukhanov, expert, head of the testing laboratory: Any surge protector or just an extension cord is designed to transmit a certain current, which is indicated in amperes. This parameter depends on the cross-section of the wires, as well as the cross-section and material of the current-carrying plates. With a significant (more than 10-20%) and long-term (more than 5-10 minutes) exceeding the stated value, the product may melt or ignite, creating a fire-hazardous situation.

In high-quality network filters, everything is limited to the overload protection. But inexpensive Chinese filters and extension cords rarely even withstand the declared values, so they should be operated with a “underload” of 20-30%, and it is better not to buy.

Spice

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We have all been accustomed to storing jars of spices for years and changing them only when one or another seasoning is over. And very vain!

Spices have a shelf life, which most often does not exceed two years. And in ground spices, it is even shorter. Studies have shown that after 6 months, ground spices lose their taste and aroma.

Tip: Give preference to spices that are stored whole. You can always grind them yourself. This is especially true for pepper, cinnamon and coriander.

Hydrogen peroxide

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Hydrogen peroxide is a mandatory component of any, even the simplest kit. And, of course, we do not open a new bubble with peroxide every time, but use the started bottle. And here it is in vain! After opening, the vial of peroxide retains its medical properties for no longer than two months, and then turns into ordinary water.

This does not apply to a sealed container: such hydrogen peroxide will quietly “live” for a year, if it is stored in a dark place and not heated.

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Damir Yarlushkin, expert: In everyday life, 3% hydrogen peroxide, which has bactericidal properties, is mainly used, which is sold in pharmacies. This liquid, having the formula H2O2, is essentially water, to which an additional oxygen atom is added during the process of electrolysis of sulfuric acid (and in some other ways). In this atom of oxygen lies the power of hydrogen peroxide. It is called "active" or "atomic" oxygen: it is the component that, when using hydrogen peroxide, detaches from the molecule and does its job, killing bacteria.

However, the molecule of hydrogen peroxide H2O2 is very unstable, so it should be stored in a dark place and in a tightly closed container. The energy of a daylight quantum is enough to “break up” the peroxide molecule into water and oxygen. And in the open air, decomposition occurs even faster than in the light: when in contact with air, atomic oxygen simply “evaporates”, combining with oxygen in the air, and ordinary water remains in the bubble.

The difference between shelf life and shelf life: learn to distinguish one from another

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  • Period of storage: The period during which the food product, subject to the established storage conditions, retains the properties specified in the regulatory or technical document. Expiry of storage does not mean that the product is not suitable for its intended use.
  • Expiration date: The period after which a food product is considered unsuitable for use as intended.
  • Duration: The period during which the food product may be offered to the consumer.

Documents and laws containing clear and understandable information on this topical issue:

Ukraine

DSTU 4518-2008 “Food Products. Labeling for consumers. General rules".

No. 487 Order of 10/28/2010 "On approval of the Technical Regulations on the rules for labeling food products."

Russia

GOST R 51074-2003 “Food products. Information for the consumer. General requirements "(RF).

Shelf Life: Pillow, Slippers

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Shelf Life: Sponge, Bast, Towel, Toothbrush, Hydrogen Peroxide

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Shelf Life: Comb, Perfume, Eau de Toilette

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Shelf Life: Dummy, Baby Car Seat

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Shelf Life: Bra, Running Sneakers

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Shelf Life: Spices, Flour

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Shelf Life: Fire Extinguisher, Network Filter, Disinfectants, Insect Repellent

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