I m using amide column with RI detector in hplc. In literature, there are different mobile phases for glucose, fructose and 5 HMF detection like for glucose, fructose it is DI water and for 5 hmf it is methanol/ water. So, can i use same mobile phase for glucose, fructose and 5 hmf. Because, if it is not same than i have to change mobile phase for individual product.