Ive ordered some glass bottles in a variety of sizes. they will be used for storage of my pg vg and nic solution. (got a gallon each of pg and vg coming). so i need to know what equipment is a must have for mixing flavors. do people use cyclinders and beakers? do most people keep it simple with small plastic bottles? what's best for exact measuring? on one hand dont want to buy stuff i wont really need and on the other hand want to have some quality equipment for years of good use. all suggestions appreciated, duplicate suggestions a plus. thanks