TweetIt needs at least 10ml. That is if 1g of tren you can get to dissolve in 1ml solvent while surrounded by the glue and binders, which may absorb some. I think it would have to be at least 15ml for 10grams worth to get it all.
Unless, its not supposed to be completely dissolved before adding the oil. The I think it is feasable to say 10ml solvent would do it. I have no idea what kit you have though. Most that I have seen/used are 5ml solvent mixture per 2g hormone.