Tip: Don't forget to overbuy a little of whatever you are buying in the sachets...meaning if you need 30ml for your cycle and you get say 3 x 10ml sachets, you will fall short.
You will not get 100% transfer from the sachet to a vial, also if you use a filter you will loose a little from what gets left/trapped in the filter after the transfer.
If you need 30ml buy 40ml to be safe.
GL.