Calgon by BelliniFoto aka Sodium Hexametaphosphate ~ 500g

Calgon by BelliniFoto aka Sodium Hexametaphosphate holds calcium and magnesium salts in solution, even when boiling, making it a superb water softener, sometimes called Graham’s Salt

Used for decades and decades by photochemists and photographers to perfect their solutions

Click HERE for the Data Safety Sheet and ALWAYS use common sense when handling raw chemistry even more than you would with any other photographic chemistry