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Different clothing should be selected from a variety of detergents on the detergent market. Environmental experts pointed out that consumers should choose different detergents for different dirt, different fabric types, washing methods and additional functions when washing clothes.
In addition to the choice of clothing characteristics, when purchasing detergent products, also pay attention to the label on the standard. The washing powder has the national recommended standard (the standard number starts with GB and represents the national standard). If the national recommended standard is not implemented, the enterprise standard will be implemented. If the enterprise standard is lower than the national recommended standard, the quality of the product does not meet the national recommended standard, and the quality is low. Experts advise consumers not to buy.
Expired product special effects will be invalid. Pay attention to the shelf life when purchasing detergents. The surfactants and builders (except enzyme preparations and bleaching agents) contained in washing powder (liquid) will not deteriorate due to time during storage. Therefore, the expiration does not affect the use, and even the washing powder moisture absorption and agglomeration does not affect the use.
However, additives with special effects, such as enzyme preparations, are gradually inactivated as their storage time is prolonged, and the higher the temperature, the faster the inactivation. However, even if the enzyme preparation is completely ineffective, the other ingredients are still effective, so there is still a certain decontamination effect.
Bleached laundry detergents containing sodium percarbonate, sodium perborate and bleached laundry detergents containing hydrogen peroxide or sodium hypochlorite, if stored in improper conditions, can also cause loss of active oxygen release and bleaching. If the plastic bag has a bulge (due to the release of active oxygen), it indicates that the bleach may fail and does not function as a bleaching agent.
Rinse the laundry and leave the foam. Do not wash the clothes. There are still some foam residues on the rinsing. Many people think that the clothes are not cleaned at this time. It is necessary to wash the foam.
The expert pointed out that it is not necessary to leave a small amount of foam, which is within the scope of safety. In the case that the amount of washing powder is generally suitable, the normal washing mode set by the fully automatic washing machine can completely rinse the laundry, and if it is hand washing, it can be thoroughly rinsed two or three times.
In addition, experts also stressed the importance of immersion during laundry. The soaking process is also a decontamination process. Practice has shown that soaking is the process of transferring the dirt to the aqueous solution. Soaking without any mechanical force can be seen that the water is dirty, indicating that the soaking is a process required for decontamination.
In addition, many people are accustomed to storing dirty clothes in the washing machine, and then putting water and washing powder into the laundry. This will cause some local adhesion to the washing powder on the clothes, and the concentration is high, which may cause the clothes to be white after washing and the color shades are different. It is recommended to wash the clothes first, first put the washing powder, add water to stir, wait until the washing powder is fully dissolved, then put the clothes, soak for 10 to 20 minutes and start cleaning.
Excessive laundry detergents Many people think that the more washing powder (washing liquid), the cleaner the clothes, but this is not the case.
Experts said that after the washing powder reaches a certain amount, the detergency will no longer increase with the amount added. It is understood that when the concentration of ordinary washing powder is between 2g/L and 5g/L, the washing and decontaminating ability is the strongest. That is to say, it is sufficient to add 10g~20g washing powder to a basin of water; if using concentrated powder, Reduce the amount by half.
Excessive amount of washing powder will increase the alkalinity of the solution, damage the clothes fibers, and excessive excess of washing powder will be attached to the clothes. It takes time and effort to rinse.
In addition to the amount of detergent used in the laundry, the water temperature should be controlled. Under normal circumstances, the water temperature of the laundry is higher, and the decontamination is better, but the higher the better. The commonly used enzyme washing powder contains alkaline protease and alkaline lipase. The activity of these two enzymes is related to temperature. The enzyme can exert the best effect at about 40 °C, and the temperature is too high or too low to decrease the activity of the enzyme.
Protease has a denaturing effect, the temperature is high, the protein is easy to coagulate, and the solubility is significantly reduced. Just as the protein will solidify after being heated at a high temperature, the clothes often have protein-like stains, which are easily solidified in the fibers of the clothes after high temperature, thereby Stains are more difficult to remove.
Core Tip: Wang Hai, who is known as the “first person in Chinaâ€, pointed out on Weibo that a brand of laundry detergent was detected to contain a “carcinogenic substance†fluorescent whitening agent, and said that it would sue the brand as a consumer agent. The company to which the product belongs. At present, there are many opinions about the "fluorescent whitening agent". Experts remind that the choice of washing products should not be stunned by the propaganda words, and grasping the key information is the key to choosing the right product. The correct laundry habits are also the key to washing clothes.
March 12, 2020