Dissolve 1,74 g of dipotassium hydrogen phosphate (K2HPO4), 12,37 g of potassium dihydrogen phosphate (KH2PO4) and 21,41 g of sodium sulphate (Na2SO4) in about 700 ml of water.
Los 1,74 g dikaliumwaterstoffosfaat (K2HPO4), 12,37 g kaliumdiwaterstoffosfaat (KH2PO4) en 21,41 g natriumsulfaat (Na2SO4) op in ongeveer 700 ml water.