Anyone an expert on SMA gold?

[maxpower]

Do you know if it's ok to make up 180ml bottles - they aren't listed on the tin but I presume it would just be 180ml water & 6 scoops of formula.

Yes will be fine as long as ratio of water to formula is correct.

cheers - it appears that its 30ml to one scoop, it's just that they don't list 180ml bottles on the tin

Its just probably to save the expense of printing for the company.