The Korean Atomy Liquid Detergent bottle is labelled 2 kg, while its refill is labelled 2.1 kg. The refill contains 100 g more than the original bottle’s labelled contents.
That difference does not establish the bottle’s maximum capacity. Without that measurement, you cannot conclude that the whole refill will certainly fit or certainly overflow. Any detergent already in the bottle also takes up space.
Keep weight and volume separate
Two-point-one kilograms is not automatically 2.1 litres. Converting between mass and volume requires the formulation’s density.
Use the refill and container instructions, rather than assuming that a matching brand name means one full pouch must be poured in at once. If some remains, keep it according to the original packaging’s resealing and storage directions.
Match the container and handle spills
Check that the bottle and refill are the same product. Retain the labelled container; a drink bottle or an anonymous dispenser makes later identification harder.
Do not mix in a different detergent or add water merely to change the remaining volume. The Korean warnings note that spilled detergent can make a floor slippery. Clean up a spill appropriately, close the packaging, and keep the product out of children’s reach.
The refill size is not the wash dose
Dose from the product’s laundry-load table, not the size of the bottle. For example, the Korean table’s up-to-5 kg laundry row gives 25 mL for a conventional machine and 20 mL for a drum/front-loading machine. Larger loads have their own rows.
The clothing restrictions also matter. The warnings exclude wool, silk and leather, among other unsuitable garments, and require checking the garment’s care label. Do not treat the detergent as suitable for every item merely because the machine can accept it.
A correct refill purchase has two parts: it replenishes the intended container, and the detergent still suits the clothing and washing method. The extra 100 g does not change either requirement.
Sources and scope
Korean weights, dose example and material restrictions checked September 7, 2026. Follow the complete current labels for handling and garment suitability.