At the weekend I dissolved 1g of cbd isolate in about 25ml of pg. I got it from chefscbd. £27 for 1g. It’s tiny white crystals, like powder, is that what yours looks like @Stacey1984 ? If so just put it in pg, shake it about and heat it a bit (I put the bottle on a radiator at medium heat for an hour) until it dissolves. This stuff is quite good, it seems stronger than the cbd shatter I’ve been using. I would guess you could probably get 1/4g to dissolve in 5ml of pg quite easily. I’d also suggest puffing it from a dripper, it seems to work better for me.