Så här står det på förpackningen acidity (as HCl) max 0,0005% Alkalinity as Ca(oH)2 max. 0,5% No3 max.0,01% po4 max.0,001% so4 max.0,02% nh4 max.0,005% Arsenik, As max.0,0001% Barium, Ba max.0,02 % Cu max.0,0005% Fe max.0,0025% Pb max.0,0005% Mg max.0,1% Mn max.0,0005% Ni max.0,0005% K max.0,1% Na max.0,1% Zn max.0,01%