J.O.
The pump and bottle advice you've gotten has been good...just wanted to expand on the plastics info in case people missed it. The plastic types to avoid are #3, #6, and #7.
#3, Polyvinyl Chloride (PVC) has adipates and phythalates to soften it, which leach into foods, especially fatty foods and alcoholic beverages. Use Glad cling Wrap, which has no PVCs, don't trust deli cling wrap - don't use the parts of the meat that touch the plastic.
#6 is Polystyrene (PS), and is a hormone disruptor and possible carcinogen. This is your average every-day foam used for hot cups, fast-food plates, and cheap plastic cutlery. Eating hot food off of foam or microwaving foam is especially unsafe. Ironic that we use these products all the time with hot food because they are such good insulators!
#7 is Polycarbonate. This is where we have to watch baby bottles - almost 95% of the baby bottles on the market are polycarbonate! Many baby bottles, 5-gallon waterbottles, some microwave ovenware, and the lining of cannned foods can all contain this. Polycarbonate bottles are made with bisphenol-A (BPA) wheich has been shown to alter hormone function and chromosome alignment. Evenflo makes plastic bottles from the safer #4 LDPE plastic, and there are glass bottles available. It is imporant never to microwave or dishwasher-wash any plastic bottles, even those that say they are dishwasher safe. High temperatures can cause bosphenol-A to leach. Also a good reason to avoid canned foods as much as possible and use fresh or frozen, instead!