It has high mechanic strength, heat resistance and high pressure resistance without interference of Na+, K+, NH_4~+, Cl-, B4O_7~2 , PO_4~3, HPO_4~2.

• 它机械强度高,耐高温高压,不受Na~+,K~+,NH_4~+,Cl~-,B_4O_7~(2-),PO_4~(3-),HPO_4~(2-)等离子的干扰。