أرسل هذا في رسالة قصيرة: Flow-injection spectrophotometric determination of calcium using murexide as a color agent

  _  _      ___     ______     _____             
 | \| ||   / _ \\  |      \\  |  ___||     ___   
 |  ' ||  / //\ \\ |  --  //  | ||__      /   || 
 | .  || |  ___  |||  --  \\  | ||__     | [] || 
 |_|\_|| |_||  |_|||______//  |_____||    \__ || 
 `-` -`  `-`   `-` `------`   `-----`      -|_|| 
                                            `-`