Bicarb System 12 (12g of Sodium Bicarbonate) = 3300mg Bicarb System 15 (15g of Sodium Bicarbonate) = 4100mg Bicarb System 19 (19g of Sodium Bicarbonate) = 5200mg Bicarb System 22 (22g of Sodium Bicarbonate) = 6000mg Bicarb System 25 (25g of Sodium Bicarbonate) = 6800 mg