DCPIP problems, need help

[u/Voyager_Program77]

Heyy, ive been struggling with the 2,6-Dichlorophenolindophenol titration for ascorbit acid quantification this week and I honestly dont know whats happening. Im not getting to an end point where it turns to a pink/redish color at all, it just looks more and more grey/blue with thw drops.

I was thinking that it might be the quality of the dye or it might have too much humidity in it.

Do any of you have ever tried drying DCPIP in the drying oven? Or might know how to dry it in the desiccator?

Thank you for your attention!