Strange crystallization

I made the rest of my gear 60ml of test PP and 60ml NPP. Ok now I made the same batch and each I split up into 4 vials. I had the test pp crash so I heather all of them at 250 for 45 min. Now the strange part is one vial of TPP is crystallizing but the other isn't even though they are all made from the same batch. Oil is still clear it's just crystallizing bad so I'll have to heat up again

Yep and u may have to heat them up more than once I had some ugl tne Ed