... be used feedstuff CompositionSpecification(Tech grade)(Purity),wt. % ,min98(Ca content),wt. % ,min30.1(Heavy metals),(Pb)---( ... Water insoluble),.---(Dry weight loss),wt. % ,max0.5(PH of 10% water ... .5-7.5 CompositionSpecification(Feed grade)(Purity),wt. % ,min98(Ca content),wt. % ,min30.1(Heavy metals),(Pb ... 0.001(Water insoluble),.0.3(Dry weight loss),wt. % ,max0.5(PH of 10% water ...