There are many different kinds of bottles on the market, and mothers need to consider a lot in order to choose a bottle of their choice, in addition to learning how to adjust? You also need to consider how big is the right bottle? Is the bottle material safe? Is the nipple suitable for the baby? The capacity of the bottle The common capacity of the bottle is divided into 120ml, 160ml, 200ml, 240ml, some mothers prepared several 240ml bottles, while some mothers prepared bottles are only 60ml, such a pocket-sized bottles look very cute fun, but not practical. A newborn’s stomach capacity is about the size of a marble on the first day, about the size of a ping pong ball on the third day after birth, about the size of a large egg on the tenth day, and about the size of a softball for an adult. Basically, a baby within one month can nurse 100~120ml at a time, and that kind of pocket-sized bottle will soon be used only as a water bottle because it cannot meet the baby’s nursing volume. For newborns, the recommended bottle capacity is 120ml, so that the bottle can meet the baby’s nursing requirements, and the feeling of adults holding it in their hands is also more appropriate. As babies continue to grow and develop, small bottles will gradually fail to meet the baby’s needs, then parents should change a group of slightly larger bottles, two 200-240 ml bottles is a good choice. Bottle material 1, plastic bottles Plastic bottles are considered unsafe mainly because there is a material called PC made of plastic bottles contain Bisphenol A. Bisphenol A is an “endocrine-disrupting chemical”, which can penetrate into milk powder through heating and is likely to disrupt the normal metabolism and development of babies, immunity, and may even be carcinogenic. BPA also has an estrogenic effect, which may lead to female baby changes in male babies. However, plastic bottles are not the only material PC, PP, PES and PPSU are quality materials that do not contain BPA. 2, PP, PES and PPSU material advantages PP: high chemical stability, contact with most chemicals do not react; good health performance, do not have to worry about toxicity problems; high heat resistance, microwave heating use; low price. PES and PPSU: lightweight, not easy to break. 3, PP, PES and PPSU material disadvantages PP: high temperature oxidation resistance is poor, low temperature becomes brittle, not wear-resistant, easy to aging. PES and PPSU: high price and less variety, not easy to buy. How to identify what material the bottle belongs to? 1, there will be a triangle mark at the bottom of the bottle of milk bottle, the triangle inside the number written, while the abbreviated name of the material is written below. Note: This method is not only applicable to plastic bottles, but also to the selection of plastic water cups and other appliances. 2, PC material is heavier, PP material is lighter. 3, PC bottles are more transparent and hard, while PP bottles are slightly milky and slightly elastic. Glass bottles Advantages Good safety, high transparency of glass, good heat resistance, and not easy to scratch, not easy to hide dirt, easy to clean, many times high temperature sterilization does not deteriorate, suitable for babies who need to eat milk many times. Disadvantages Not strong enough, easy to break, so glass bottles are suitable for feeding newborn babies, held by the mother and father to feed. However, after four months, babies start to be naughty and it is advisable to switch to plastic bottles considering the safety. The right pacifier In addition to the bottle capacity and material is important, the pacifier is also an important component, which affects the speed and comfort of the baby when eating milk. For babies who don’t like the taste of rubber, you can replace it with a pacifier made of isoprene rubber or silicone. 2, the opening of the pacifier Commercially available pacifiers have two types of openings, small holes and crosses. A hole is left in the pacifier, which opens the door for bacteria to invade, while the opening of the cross is closed when not in use, blocking the invasion of bacteria. When the baby sucks, the cross fork can be opened and closed according to the baby’s sucking power, playing a role in regulating the flow of food. The size of the pacifier hole is appropriate for the milk to flow continuously in drops when the bottle is upside down. The pacifier hole for drinking is generally smaller than the pacifier hole for breastfeeding, and should be clearly distinguished when applied. A pacifier hole that is too large will cause choking when the baby sucks too quickly, while a pacifier hole that is too small will make the baby struggle to eat the milk. When choosing a pacifier, the rubber nipple should not be too hard or too soft, too hard for the baby to suck, too soft for the nipple to stick together due to the negative pressure when sucking and not sucking out the milk. The bottle has an expiration date, especially the plastic bottle, after a period of time, the bottle will be brushed and oxidized, the fog and milk scale is not easy to remove, so it is recommended to replace the bottle once every 3 to 6 months, but if the surface is damaged and worn, it should be immediately replaced with a new one. The pacifier is a consumable, after long-term use, there will be hardening, deterioration and other situations, and in the process of cleaning, it is possible to make the pacifier larger, resulting in choking danger when the baby drinks milk, so it is recommended that about 3 months to replace once, but when there is damage, regardless of time to be replaced with a new.