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I searched for a method to determine quantitatively Hydrogen and Oxygen gases and to determine the flow rate of them but I couldnt find so can any one mention to me these methods?
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I did spectrum scan to levothyroxine sodium which show highest absorption at wave length=230nm which the absorption =0.136 and it's absorption at 225nm =0.047 but when Injecting it on HPLC...
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