If you have thoroughly cleaned the measuring cup after it was filled with bleach, it should generally be safe to use for filling the water filter and rice cooker. However, it is essential to exercise caution and consider the following factors:
Residual Bleach: Ensure that you have rinsed the measuring cup thoroughly to remove any residual bleach. Rinse it multiple times with clean water to ensure no traces of bleach remain. Bleach can be harmful if ingested or if it comes into contact with certain substances, so it's important to eliminate any potential residue.
Compatibility: Consider the materials of the water filter and rice cooker. Bleach is a strong oxidizing agent and can react with certain materials, particularly metals like aluminum or some plastics. If your water filter or rice cooker contains these materials, it's advisable to avoid using the measuring cup that had bleach in it to prevent any potential reactions.
Sensitivity: Some individuals may be more sensitive to residual bleach than others. If you or anyone using the water or rice cooked are particularly sensitive or have a known sensitivity or allergy to bleach, it may be wise to err on the side of caution and use a separate measuring cup to avoid any potential issues.
Ultimately, if you have cleaned the measuring cup thoroughly and the water filter and rice cooker are compatible with bleach, there should be minimal risk involved. However, if you have any doubts or concerns, it's best to replace the measuring cup or use a separate one to ensure the safety of your water and food preparation.