Certified ValuesAlkalinity,GranTit’n(asCaCO3).6.35mg/L Nitrate + Nitrite (as N) . 0.228 mg/LAl . 0.091 mg/L K . 0.36 mg/LCa .3.04 mg/L Silica (as Si) .2.1 mg/L Cl. 0.96 mg/L Na. 1.5 mg/L Colour(Hazenunits).24 Sulfate (as SO4).3.26mg/L Dissolved Organic Ca