How to remove the old blood on the sheets? Something simple.

The old blood on the sheets can be removed like this:

1. Wash with special laundry detergent.

First of all, the sheets need not be stained with water, then they are smeared on the blood spots with special laundry detergent, let stand for about 5 minutes, and then the blood spots are routinely scrubbed.

Because the blood has been stained for a long time, it may not be completely cleaned. You can wring out the bed sheet, then stick the blood-stained part on the bottom of the basin, clean it with colored clothes and the collar of the 1/4 bottle cap (10g), pour it on the blood-stained part, cover the blood-stained part with other parts of the bed sheet to prevent it from drying, and then let it stand in the dark for 2 hours.

If the blood is still not removed after two hours, add an appropriate amount of water to wet the sheets and leave them overnight. After washing, the blood on the sheets can be completely washed off.

2, oxalic acid concentrated solution cleaning

The old blood on the sheets will turn dark brown, because the iron in hemoglobin is oxidized in the air to produce rust, which can be washed off with oxalic acid concentrated solution. Oxalic acid can turn rust into a colorless substance and dissolve it in water.

3. Wash the white radish with salt water

If you find old blood stains on the sheets, you can wash them with cold water or salt water first, then put a cloth on the back of the blood stains, apply white radish mud on the blood stains, rub them hard, and finally wash them with water.

4, ammonia or hydrogen peroxide cleaning

The blood on the sheets has been contaminated for a long time. You can use 10% ammonia or 3% hydrogen peroxide to wipe the bloodstained part. After a while, wash them with cold water If it still can't be cleaned, clean it with 10%- 15% oxalic acid solution, and finally rinse it with clear water.

Extended data:

Cleaning method of fresh blood stains on clothes;

How to wash clothes when they are just stained with blood? At this time, if blood is found, it should be washed immediately with cold water or light salt water (hot water is forbidden, because blood contains protein, which will solidify and not dissolve easily when heated), and then washed with soap or 10% potassium iodide solution. If you find that the blood stain has not completely disappeared, you should put a cloth on the back of the blood stain, apply it to the blood stain with white radish slices or white radish mud, then pat it hard, or wash it with enzyme washing powder, which has a good effect, and finally wash it with clear water.

References:

Baidu encyclopedia-blood stains