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Nursing Bottles & Nipples


Nursing Bottle Holder


Q: Do the Nursing Bottle with Wide-neck Peristaltic Nipple and the Nursing Bottle with Low-flow Nipple fit inside the Milket?

Yes, you can fit 1 of the Nursing Bottle with Wide-neck Peristaltic Nipple and the Nursing Bottle with Low-flow Nipple inside the Milket.


Q: Can I use glass bottles with the Milket?

Glass bottles can develop chips and cracks if they are dropped, so they can unexpectedly crack open when filled with hot water. We recommend that you use plastic bottles with the Milket.


Milk Powder Case


Q: How much powdered formula does the Milk Powder Case hold?

Each section of the Milk Powder Case holds enough powdered formula (90 ml) to make 240 ml of formula.




Q: Which nipple size should I use at each stage of my baby’s development?

Please see the chart below for information about hole size. Note, however, that the “age in months” guideline may need to be adjusted depending on your baby’s stage of development and ability to suck. Be sure that you understand your baby’s needs, and then choose the most appropriate hole size. To give babies the same kind of exercise that they would get drinking from their mother’s breast, 10 to 15 minutes is an appropriate length of time for each feeding. The amount that babies drink increases as they grow, but don’t be bound by set guidelines. Instead, choose the type of nipple that lets your baby drink for 10 to 15 minutes. If your baby takes much longer than usual to drink a bottle or if the nipple collapses, try switching to the larger size (S>M or Y>L).


Q: Which direction should the air holes face when I put the nipple in the cap?

The air holes in PIGEON nipples can face any direction, except for low-flow nursing nipples and P-type Nipples. The Nursing Bottle with Low-flow Nipple should be placed so that the “UP” mark is on top.


Q: What should I do when the nipple collapses and my baby has trouble drinking?

If the air holes do not function normally, or if your baby sucks so vigorously that the air holes do not work, the nipple may collapse.

  • If milk or other materials are clogging the air holes, wash the holes and gently poke them open using a toothpick or similar instrument.
  • If air is not flowing smoothly because the cap is closed too tightly, see if loosening the cap a little helps.
  • If the nipple collapses due too vigorous sucking, try using a larger nipple that is one size up (S–>M, Y–>L).


Q: Why does the nipple turn white after I put it in a chemical sterilizing solution, and is it safe to use?

The rubber used to make nipples absorbs moisture when soaked in water for a long time, and takes on a whitish color. This kind of rubber also turns white when soaked in sterilizing solutions, but it is still safe to use.


Q: Why do colors and odors remain on silicone rubber nipples when my baby drinks fruit juice, and are they still safe to use?

Silicone rubber nipples absorb colors and odors. Once something has been absorbed, it can’t be removed. Nipples absorb the color of juice or the odors of detergent or other items in the vicinity, but they are still safe to use.


Q: How often should I change nipples?

Two different types of materials are used to make nipples, isoprene rubber and silicone rubber. If you use 3 or 4 isoprene rubber nipples interchangeably during the same period, they should last 3 to 4 weeks. Under the same conditions, silicone rubber nipples should last about 2 months.


Q: Are the nipples for the Nursing Bottle with Wide-neck Peristaltic Nipple and the Nursing Bottle with Low-flow Nipple interchangeable?

The Nursing Bottle with Wide-neck Peristaltic Nipple and the Nursing Bottle with Low-flow Nipple are the same diameter, so you can use the nipples interchangeably.


Q: Why does the Wide-neck Peristaltic Nipple collapse while my baby is drinking?

If the air holes do not function properly, or if your baby sucks so vigorously that the air valves cannot keep pace, the nipple may collapse. Bubbles in the milk indicate that the baby is drinking smoothly, but if no bubbles are seen, remove the nipple from your baby’s mouth and check the following:

  • If the openings in the air valves are stuck together, take a nipple pin (see the illustration) and poke the air valve to make sure that the opening is clear.
  • If the nipple has collapsed because your baby is sucking too forcefully, try using a Y-cut nipple if you have been using an S-size nipple.


Q: My baby takes a long time to finish a bottle when I use an S-size nipple, but with an M-size nipple, he takes only 5 or 6 minutes. Is this all right?

If babies are experiencing the same approximate conditions as when drinking from their mother’s breast, they should take 10 to 15 minutes for each feeding. If you are using an S-size nipple, you don’t have to change it as long as your baby finishes in 10-15 minutes. The next sizes up are S, M and Y-cut. If the milk flows too fast with an M-size or Y-cut nipple, try tightening the cap of the bottle.


Q: Do I have to use a special nipple for juice?

Nipples designed for drinking juice have holes that allow your baby to drink even thick juices or those with lots of fiber. (Note that you should avoid using silicone rubber nipples for this purpose, since they can absorb the color of the juice).


Q: Does PIGEON have a nipple especially for cooled boiled water? My baby seems to choke a bit when I use the S-size.

PIGEON does not have any special nipples for drinking water. The smallest hole size available is S. If your baby chokes, try tightening the cap.


Q: Both the Y-cut and the M-size nipple are supposed to be used from the age of 2 or 3 months. How are they different?

The hole in the M-size nipple is round. The Y-cut nipple, as its name suggests, is not a hole but a Y-shaped slit. When a baby presses the nipple in his or her mouth, the cut opens and milk comes through. The maximum flow through a Y-cut nipple is about the same as that of an L-size nipple.


Q: I’m using an S-size silicone rubber nipple, but there is still milk left even after my baby has been drinking for 20 minutes. Is this all right?

The recommended time for each feeding is 10-15 minutes. If your baby is taking 20 minutes or longer, try loosening the cap of the bottle a little. If that doesn’t work, switch to an M-size or Y-cut nipple.


Q: Does PIGEON have nipples made of natural rubber?

No, we don’t. PIGEON makes two types of nipples, silicone rubber and isoprene rubber, both of which are compound rubbers. Isoprene rubber most resembles natural rubber in color and elasticity.


Q: Can PIGEON nipples be used on bottles from other manufacturers?

No, they cannot. Be sure to use PIGEON nipples with PIGEON nursing bottles. There are no common industry-wide specifications for nursing bottles, and each company follows its own specifications.


Q: How can I tell the different sizes of nipples apart?

In the case of silicone rubber nipples, the size is displayed on the base. Only the M-size isoprene rubber nipples displays the size. Figure out what size the hole in a nipple is by comparing it with an M-size nipple. If it’s smaller, it’s an S, and if it’s larger, it’s an L. With a Y-cut and Cross Cut nipple, pinch the tip with your fingers to ascertain the shape of the cut.


Q: Why does milk spurt out when I tilt the bottle right after mixing the formula?

This phenomenon is caused by air expanding inside the bottle. The hotter the milk is, the more forcefully it will spurt out. This happens only at first, and the amount is not very large. Before feeding your baby, try tilting the bottle in the kitchen sink to let a little milk out.


Q: How should I sterilize the Milk Powder Case?

You can sterilize it by boiling, steaming it in the microwave oven, or soaking in chemical sterilizing solutions. Be sure to use the special microwave-safe container if you decide to steam it in a microwave oven.


Q: When I tilt a bottle with a Y-cut nipple, no milk comes out. How can I test the temperature?

Since the Y-cut nipple is designed to let milk flow when the baby presses it in his mouth, nothing comes out if you merely tilt the bottle. Some experts advise that you test the temperature on the inner surface of your arm, but if you’re using a Y-cut nipple, check the temperature by touching the surface of the bottle.


Q: Should I wash the bottle and nipple in detergent?

Yes. Milk contains fat and protein that cannot be washed away in plain water. Before sterilizing the bottles, be sure to wash them clean with detergent and rinse them thoroughly.


Nursing Bottles


Q: What factors should I consider when choosing glass or plastic nursing bottles?

Both glass and plastic bottles can be sterilized by boiling, steaming in the microwave, or soaking in a chemical sterilizing solution. Both bottle types have advantages. You might want to try using glass bottles at home and plastic bottles when you are away from home.


Q: What precautions should I take when using glass bottles?

Always remember glass bottles are breakable. The glass used in nursing bottles is strong, but bottles may break when dropped or hit by a hard object, or when hot water is poured into a cold bottle. In addition, chips in the glass can cause it to break, so you should check for cracks and chips regularly. When preparing a bottle, use water that is about 50-60℃, the same for milk formula. Do not let babies hold glass bottles by themselves.


Q: There appears to be small cracks at the bottom of the bottle. Is this all right?

These marks are an inevitable by-product of the manufacturing process, and are not defects. The marks that look like small cracks at the bottom of glass bottles are called shear marks, and their size and prominence may vary. A mark that looks like a vein on the side of a glass bottle is called a parting line, and it is a result of the molding process. Of course, be careful to check for actual chips in glass bottles, as they may crack when you sterilize the bottle in boiling water.


Q: Can Wide-neck Peristaltic Nipples and Low-flow Nipples be used on any bottle?

Wide neck peristaltic nipples and low flow nipples are meant for wide neck bottles only. They do not fit into any other bottles.


Q: What is a Nursing Bottle with Low-flow Nipple?

The Nursing Bottle with Low-flow Nipple was developed to help babies who have difficulty nursing. This special glass bottle teaches babies to drink breast milk directly and gradually leads to successful breastfeeding. Moreover, you can use this bottle when breast milk is temporarily unavailable or when a mother does not produce enough milk to feed her baby.


Q: Feeding my baby with the Nursing Bottle with Low-flow Nipple takes a long time. What other nipples can I use?

The Low-flow Nipple is available only with a low-flow extra-small hole (SS). As your baby grows and feeding him or her begins to take too much time, try using the Wide-neck Peristaltic Nipple (available in S, M, L and Y-Cut holes). *Note that the Low-flow Nipple and the Wide-neck Peristaltic Nipple are the same diameter at the base, although the tips of the nipples are shaped differently, and are therefore interchangeable.


Q: What is the difference between the Nursing Bottle with Wide-neck Peristaltic Nipple and the Nursing Bottle with Low-flow Nipple?

The Nursing Bottle with Low-flow Nipple is used when it is difficult for a mother to breastfeed her baby directly, while the Nursing Bottle with Wide-neck Peristaltic Nipple is used when weaning the baby or when breastfeeding is being supplemented with formula. The Nursing Bottle with Low-flow Nipple is designed to teach the baby to drink from the mother’s breast when problems such as insufficient milk production make nursing difficult. However, when babies become accustomed to a conventional bottle, they sometimes find it difficult to go back to nursing from their mother’s breast. For that reason, the nipple is available only with a SS-size hole, which requires the baby to suck harder, and the bottle is available only in the 160 ml size.The Wide- neck Peristaltic Nipple is more like a mother’s nipple, and it stretches inside the baby’s mouth. In cases where breastfeeding is being supplemented by formula or when the baby is being weaned off the breast, the Nursing Bottle with Wide-neck Peristaltic Nipple is a better alternative to a mother’s breast than a conventional bottle. The bottle is available in 160 ml, 200 ml, 240 ml and 300 ml sizes, and the nipples are available in S, M. L and Y-cut sizes. Note that the Low-flow Nipple and the Wide-neck Peristaltic Nipple are interchangeable.


Q: How long can I keep unused, unopened bottles?

The length of time that you can keep an unused bottle (one still wrapped in plastic film or packaging) depends on the material that the nipple is made of. As a rule, isoprene rubber nipples (brown) last for 1.5 years, while silicone rubber nipples (colorless and transparent) last for 3 years. In either case, store them where they are not exposed to direct sunlight, high temperatures or humidity.


Q: Why did the bottom of the glass bottle fall off when I was preparing formula?

Glass bottles do not withstand internal pressure very well. If you shake one when it is full of hot water, the increase in internal pressure can cause chips to crack open. This is especially true if the bottom of the bottle is chipped. Internal pressure may force the bottom to fall off. Be sure to check for cracks and chips each time you use a glass bottle. Furthermore, when preparing a bottle, use hot water that has been cooled to 50-60?C and mix the contents by stirring from the bottom before you attach the nipple.


Q: When I used a chemical sterilizing solution, the color of the printing on the bottle changed. Can I still use it?

Nursing bottle chemical sterilizing solutions contain components with bleaching effects. Repeated use of such sterilizing solutions may cause the printing on the bottle to fade, but you can still use the bottle without any problems.


Q: Why does milk leak from between the bottle and the cap when I’m feeding my baby?

The cap may be loose, and this can cause leaks. The nipple of a nursing bottle allows the milk to flow smoothly, and it also serves as a seal between the bottle and the cap. If the cap is loose, the nipple can no longer function as an effective seal, so milk may leak from the space between the bottle and the cap. Make sure that the cap is tightly closed. In addition, milk may leak if the air intake holes (air valves) have become enlarged for some reason.


Q: Are recommended nipple sizes marked on the bottles?

Nipple hole size differs depending on the material, capacity, and design of the bottle for which the nipples are intended.


Q: Can I wash nursing bottles in an ordinary dishwasher?

All PIGEON’s glass and plastic nursing bottles, as well as their nipples, caps and hoods, are heat-resistant and can be sterilized in boiling water. However, it is sometimes difficult to clean bottles because of their long, cylindrical shape. Consult the instruction manual that comes with your dishwasher if you want to use it to wash bottles. We do not recommend washing nipples in the dishwasher, because prolonged exposure to high temperatures during the drying process may cause the rubber material to deteriorate.


Q: Why do bubbles appear in the milk when my baby is drinking from the bottle?

Bubbles in the milk are a sign that your baby is drinking smoothly. The nipples of PIGEON nursing bottles have air intake holes (air valves). Taking in air allows the milk to flow smoothly, and the bubbles that form are a sign that air is coming in and that the baby is able to drink smoothly. If there are no bubbles at all, that means that the milk is not flowing well, so loosen the cap a little to let in some air.


Q: Which direction should the air holes face when I put the nipple in the cap?

The air holes in PIGEON nipples can face any direction, except for those in nursing bottles with low-flow nipples and P-type plastic nursers.


Q: Is it safe to use polycarbonate bottles even though they contain Bisphenol A?

PIGEON’s polycarbonate nursing bottles fully meet the standards established by Japan’s Ministry of Health, Labour, and Welfare in the Food Hygiene Law, so you do not have to be concerned about using them. To give our customers a choice, we also sell glass and PES (polyethersulfone) bottles. PIGEON has been conducting research on the safety of various chemical substances for many years, and will continue to produce safe products that meet the highest standards.


Q: What is the nipple pin attached to the Nursing Bottle with Low- flow Nipple for, and how do I use it?

The nipple pin allows you to check the condition of the air valves, which are located on the underside of the base of the nipple (the flat part that resembles the brim of a hat). The air valves are cut in a Y-shape, and if they are stuck together when you use the nipple, the nipple may collapse or invert. Before using the nipple, be sure to use the nipple pin to lightly poke open the air valves.


Q: Why does milk spurt out when I turn the bottle upside down?

Expanding air forces the milk out. If a nipple has a round hole, tilting the bottle after preparing it causes the milk to spurt out. This is caused by air that has expanded due to the increase in temperature. The amount that comes out is at most 7 to 8 ml. Conditions soon stabilize so that only a couple of drops come out, and you can start feeding your baby.


Q: What is a P-type nursing bottle?

This is a nursing bottle for babies with a cleft lip or cleft palate or for low birth weight babies or other babies who are not able to suck vigorously. The special nipple is equipped with a unique stopper so that even an infant with weak sucking ability can drink by pressing the nipple with his or her mouth and tongue. Furthermore, the nursing bottle is made of flexible, soft material (polypropylene), so that even if the baby is barely able to suck, you can feed him or her by pressing on the bottle.


Q: Can a KN cap hood and cap be used on any PIGEON nursing bottle?

You can use the KN cap hood and cap on regular nursing bottles. You cannot use them on the Nursing Bottle with Low-flow Nipple or the Nursing Bottle with Wide-neck Peristaltic Nipple.


Q: Can I warm cooled, boiled water in the microwave oven?

Yes, remove the cap, hood and nipple from a bottle and fill it slightly more than half full with water before putting it in the microwave oven. You can use either a glass or a plastic bottle.

*Caution: Do not use anything other than the Auto or Microwave function of your microwave oven to warm a bottle. Wipe any water droplets from the outside of the bottle before putting it in the microwave oven to prevent burns when you remove it. Also be sure not to heat the bottle for too long. Please follow the directions in the instruction manual that comes with your microwave oven.


Q: What methods can be used to sterilize nursing bottles?

All PIGEON’s nursing bottles, whether made of glass or plastic, can be sterilized by boiling, steaming in the microwave, or soaking in chemical sterilizing solutions.


Q: How accurate is the measurement scale on the bottle?

The scale on the side of the bottle is used for preparing infant formula, and is accurate to ?10 ml for the 240 ml glass bottle (?5 ml for the 120 ml bottle). Accuracy is determined using Japan Industrial Standards, as determined by the capacity of the bottle (the highest number on the scale). If you require higher accuracy, use a measuring cup or measuring spoon.


Q: Is the Nursing Bottle with Low-flow Nipple available only in the 160 ml size?

The Nursing Bottle with Low-flow Nipple is available only in the 160 ml size. Note that you can use the Nursing Bottle with Low-flow Nipple on a Wide-neck Peristaltic Nipple bottle (up to 160 ml or 240 ml) or the MagMag (maximum capacity 200 ml). When you use a Mag Mag training cup, note that you will need the cap components (a Nursing Cup or a Training Spout Cup and the parts for attaching the nipple or training spout). See question 31 “Are the nipples for the Nursing Bottle with Wide-neck Peristaltic Nipple and the Nursing Bottle with Low-flow Nipple interchangeable?”



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