1. Water

Water is divided into soft water and hard water. Hard water contains calcareous salts, which tend to stay on clothes together with detergents to synthesize water-insoluble sediments and stains during washing. This not only wastes detergent, but also causes problems such as yellowing, graying and stickiness. Hence, it must use soft water. An easy way to turn hard water into soft water is to boil the water and cool it before using it. Besides, adding a small amount of table salt into the water to precipitate calcium and magnesium salts in the water. After standing, the water is softened after the sediment is removed.


2. Water temperature

The temperature of the water is related to the decontamination ability. The higher the temperature, the higher the solubility of the detergent and the better the decontamination effect. However, some fabrics are not resistant to high temperature, and the use of high temperature will cause shrinkage, loss of luster, and even brittleness. Therefore, warm water should be used at 30 ℃-40 ℃.


3. Appropriate amount of detergent

Less amount of detergent will cause no detergency, and excessive amount of detergent will not only waste detergent, but also reduce detergency. When the detergent has no special instructions, the detergency effect is better when the concentration is 0.2%-0.5%. The general method is dissolve it with warm water before using. If the detergent has special instructions, it should be prepared into a washing liquid with a reasonable concentration and soak the clothes. The soaking time is generally about 15 minutes. When the clothes are too dirty, the soaking time can be appropriately extended. But the time should not be too long, otherwise the "hydrolysis" effect will reduce the life of the clothes and damage the fibers of the clothes.

4. Laundry auxiliaries (builder detergent)

Neutral detergent: special detergent for kitchen, suitable for silk and wool fabrics.
Alkaline detergent: ammonia water, sulfuric acid soda.
Acidifier: a bleaching agent, such as sodium hypochlorite, etc.
Other detergents: toothpaste and vinegar can also be used as detergents.
Glacial acetic acid: colorless and transparent liquid, mainly used to neutralize the residual lye in the fiber and protect the clothing.
Ammonia water: alkaline agent, which can remove sweat, blood, paint and other stains.
Glycerol: transparent and viscous liquid, which can clean the stains on protein fibers.
Anhydrous sodium sulfate: white powder, used to enhance the decomposition of heavy stain parts during the washing process;
Sodium polyphosphate: white powder, to enhance stain removal.



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Post time: Aug-04-2022