May I ask where to buy the vials please?
Those 4 ml vials will hold about 75gr of H4350 for reference. I really like this particular vial as it fits nicely in a MTM RMLD case: https://www.amazon.com/gp/product/B000WWFBNM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1