I’ve got 2 litres of heptane, they’ve passed the test but I’ve been seeing a lot of posts about distilling.

Now I am not a chemist by any means. I sort of understand things I have a tbi (traumatic brain injury) so asking people things is better for me to learn than reading paragraphs and paragraphs. All I have done is STB teks but I want to do an a/b tek as I have 500g of bark frozen and in unfrozen etc. and have this link showing an a/b an easy way?

Would you be able to give me some guidance on what I would need to distill my heptane. Or if it passed the test would it be unnecessary?

I have 5 1ltr borosilicate media glasses, 2000ml flask and 3 1000ml flasks