Specifications of Agar powder: Moisture:<=15% Undissolving in Water: <=1% Starch:not blue Ash:<=5.0% Water Absorbent:75ml max. As:<0.0001% Heavy Metal(calculated by Pb):<0.004% Sieve residue (sieve-60):95% passed Gel Strength:1000g/cm2 Min Color: from white to light yellow; pure,without additive and its aqueous solution have not foreign odor and taste;