You can buy an oil emulcifier which anglers use when mixing flavours for home made boilies (a type of bait used by carp anglers in Europe) from good angling shops which have a specialist approach toward carp angling, ive used this and it did the job without any bad results. However i've found that it is just as effective to give the bottle a hard vigorous shake for one minute before dosing to blend the oil and water together.