Boleh bagi dalam bahasa melayu .... saya mane faham bahasa inggeris 
hmmm .... sorry kalau marah saya
kenapa larutan garam digunakan untuk dialisis
I think, you are referring to the 0.9% NaCl(Saline) solution that is used during the dialysis.The reason is simple, the solution is isotonic with the concentration of our blood.We can not use normal water(less concentrated than blood) or more concentrated solution than blood as it may result in process of osmosis and destroy RBC’s and other blood cells(swell).So, for flushing of blood in and out of dialysis machine and all other purposes, 0.9% NaCl solution is used so as to maintain same concentration, as that of blood.