Evaporation line or shadow of a positive?

[Lujh]

I am sure there must have been many of these posts - but could you let me know if you think this is an evaporation line or a faint positive? I will obviously test again in a couple of days but as this is not expected, I’d appreciate anyone else’s opinion in the meantime… thank you

I couldn’t call it tbh. I think you are just going to have to keep testing until you know for sure, one way or the other.