the Arm and Hammer Baking Soda (Arm and Hammer Baking Soda 454gram, nu 7% korting)
and it seems like the equivalent Natriumbicarbonaat / Sodium bicarbonate, NaHCO3 (Baking Soda (Natriumbicarbonaat / Zuiveringszout) kopen - Natural Heroes)
Sorry for the dutch site's.
My TA went down to 30 and as I read I need baking soda to level it up. Can baking soda be stored for longer period of time?