Epoxy Equivalent Weight (EEW)-Session 7 @EpoxyChannel 

Thanks for the tip.

Hey dear Sohaib, Your question is kind of vague to me, but let me explain the situation based on my understanding and plausible circumstances. The formulation: If you are formulating an adhesive product for example, technically you are mixing various compounds to achieve an adhesive (i.e., fillers, additives, etc.). Herein, the binder is a kind of epoxy, often 828 or 128 grades. If your binder and formulation is not changing then the EEW could have stayed in tact. The EEW is an inherent property of the epoxy (or the formulation) and be aware that unless there is a reaction occurs between oxiranes, it stays still. It means that in a formulation where reactions are not expected during mixing, EEW is a simple pointer to the oxirane rings. More, I am not sure about not achieving EEW on the same formulation. If you mean EEW of the formulation has varied, i.e., form 190 to 140 for example, it means that your Binder does not have the same quality as before, if other components and ratios of them are equal. You should check the EEW of your pristine Epoxy. If by achieving you mean measuring, as I explained, EEW is "not a function of weight of your formulation". So, as far as you are doing the measurement procedures right, you should end up with the same value. There are various standards exists for that. Did I answer your question?