Localized Stain Stripping Method for White Garments
Sodium hydrosulfite Cup Soaking Method
If there are localized stains, use a graduated cup for soaking.
Pour a certain amount of hot water (above 90°C) into the cup.
Add sodium hydrosulfite (concentration approx. 2.5%) and stir to dissolve.
Immerse the stained part of the garment in the cup for 2–5 minutes.
To maintain the water temperature in the cup, place the cup in a basin of hot water.
Continuously observe the change. Once the desired effect is achieved, pour the solution from the cup into the basin of hot water and mix.
Then immerse the entire garment in the basin water for a short while.
Rinse, acidify, extract, and dry.
If the stain remains, increase the dosage.Sodium hydrosulfite.

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