Things that turn out to have an expiration date. And it is worth considering!
We all know that products and things have a strictly defined shelf life , and its violation can cause serious harm to your health or the health of your loved ones. But there are other things that we use daily, but we don’t even think about the fact that they also have a limited shelf life. We always remember that it is necessary to check the shelf life of milk, we monitor the safety of cosmetics, but we ignore the huge number of objects that sometimes surround us for longer than it would cost. We propose to conduct an audit where it is needed no less than in the refrigerator.
When deciding whether to buy new sports shoes, we most often focus on the fact that the old pair of sneakers is worn out or looks bad. But few people think that even if the sneakers look well-preserved, they could still lose their “athletic” shape. And this is especially important for running shoes.
As studies show, after an average of 500 kilometers, sneakers lose their shock-absorbing properties, which means there is an excessive load on the joints.
Dmitry Krasnoyarov, product manager of the Shoes division: Of course, there is a direct effect of wear on the shock-absorbing properties of any shoe, and even more so in sports. With constant operation, any technology loses its original properties. Professional athletes usually have over ten pairs in their stock. The influence of weather conditions, surface types, as well as many other factors determine the athlete's choice in favor of the corresponding 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 lay people, can be changed no more than once every three years.
At first glance, it seems that everything is simple and clear with potatoes: if you haven't messed up, then you can eat. But in fact, everything is much more complicated and serious. Potatoes may contain a substance harmful to humans: the toxic chemical solanine. Ordinary potatoes contain its minimum amount and it does no harm.
But the potato, which was stored for a long time, began to turn green or sprout. In "old" potatoes, the level of solanine rises so much that it already becomes dangerous to human health.
Damir Yarlushkin, expert: Solanin is an alkaloid of plant origin, which is formed in potatoes and other plants of the nightshade family (eggplant, tomato, vegetable pepper, tobacco) together with chlorophyll when light enters the plant. Thus, plants are protected from insects and animals. But solanine can be dangerous for people.
If the potato has “turned green” by less than a quarter, then there will not be much harm to the body from eating it, but you need to peel such a potato by cutting off a thicker layer of the peel, since the main concentration of solanine is in it. So that solanine does not form in the potato, it must be stored in places without access to light.
Surge protectors and voltage regulators
One of the most unexpected things on our list is surge protectors and surge protectors. They are designed to work under a certain load and can only let through a limited number of Joules through themselves, after which they begin to fail.
This is especially dangerous because the operation of surge protectors that have exceeded their useful life may result in a fire.
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. If a significant (more than 10-20%) and long-term (over 5-10 minutes) excess of the declared value, the product can melt or ignite, creating a fire hazard situation.
In high-quality network filters, everything will be limited to triggering overload protection. But inexpensive Chinese filters and extension cords rarely even withstand the declared values, so they should be operated with an “underload” of 20-30%, and it’s better not to buy them.
All of us are accustomed for years to store jars of spices and change them only when this or that seasoning is over. And very in vain!
Spices have an expiration date, which most often does not exceed two years. And with 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 in their entirety. You can always chop them yourself. This is especially true for pepper, cinnamon and coriander.
Hydrogen peroxide is an essential component of any, even the simplest first-aid kit. And, of course, we do not open a new bottle of peroxide every time, but use the bottle that we started. And here in vain! After opening, the peroxide vial 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” a year if stored in a dark place and not heated.
Damir Yarlushkin, expert: In everyday life, 3% hydrogen peroxide with bactericidal properties, which is sold in pharmacies, is mainly used. This liquid, having the formula H2O2, is essentially water, to which an additional oxygen atom is added during the electrolysis of sulfuric acid (and in some other ways). In this oxygen atom lies the power of hydrogen peroxide. It is called “active” or “atomic” oxygen: it is the component that, when applied with hydrogen peroxide, detaches from the molecule and does its job, killing the bacteria.
However, the molecule of hydrogen peroxide H2O2 is very unstable, therefore it should be stored in a dark place and in a hermetically sealed container. The energy of a daylight quantum is enough to “break up” a peroxide molecule into water and oxygen. And in the open air, decomposition takes place even faster than in the light: upon contact with air, atomic oxygen simply “evaporates”, combining with the oxygen of the air, and ordinary water remains in the bubble.
The difference between shelf life and shelf life: learning to distinguish one from the other
- Shelf life: The period during which the food product, subject to the established storage conditions, retains the properties indicated in the regulatory or technical document. Expiration does not mean that the product is not suitable for the intended use.
- Expiration date: The period after which the food product is considered unsuitable for intended use.
- Implementation period : The period during which the food product can be offered to the consumer.
Documents and laws containing clear and understandable information on this pressing issue:
DSTU 4518-2008 "Food Products. Labeling for consumers. General rules".
No. 487 Order of October 28, 2010 “On the approval of the Technical Regulations on the rules for labeling food products”.
GOST R 51074-2003 “Food products. Information for the consumer. General requirements ”(RF).
Shelf Life: Pillow, Home Slippers
Shelf Life: Sponge, Washcloth, Towel, Toothbrush, Hydrogen Peroxide
Shelf life: Comb, Perfume, Eau de Toilette
Shelf Life: Dummy, Baby Car Seat
Shelf Life: Bra, Jogging Sneakers
Expiration date: Spices, Flour
Shelf life: Fire extinguisher, Surge protector, Disinfectants, Insect repellent
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