how to prepare medium with pH 4,5,6,7,8 with HCl and NaOH

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iki08
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how to prepare medium with pH 4,5,6,7,8 with HCl and NaOH

 guys i need some help here. can some one explain to me  how to prepare medium with pH 4,5,6,7,8 with HCl and NaOH. let say both of the solution have 11M concentration.