Symbol 5298 from IEC 60417 - Title/Meaning: Regenerating agent Function/description: To identify the container for the regenerating agent for water softening (salt) and to identify the relevant indicator.
Additional information: 
The same symbol may be used on the packaging of the regenerating agent
Published in: Supplement F, 1982
Own work using: iso.org/obp/graphics/grs/571f4579-1eca-4dd2-bce7-d4d80a31ba3b 200.png
Vectorization:  Mrmw