Frequently Asked Questions About Ceres Chill

It probably does! The Chiller is native with most narrow neck pumps.

For standard wide neck pumps, you would need a universal converter OR a Lansinoh adapter if you have Lansinoh or Pigeon parts.

If you have a cordless or hands-free pump, there is no need for an adapter!

If you don't see your pump listed below, please reach out to us so that we can confirm whether you need an adapter and to make sure we get you what you need!

*If your Medela hand pump isn't connecting perfectly, please email us at info@cereschill.com?

The main difference is the capacity and size!

The OG:

• Chills up to 27 ounces of milk
• Has a 20 hour storage time
• Size: 11 inches x 4 inches

The Demi:

• Chills up to 12 ounces of milk
• Has a 16 hour storage time
• Size: 8 inches by 4 inches

If you need more than 27 ounces of storage, you can bundle two OGs or an OG or Demi together for more flexibility!

Nope - you don’t need to sterilize your Chiller! We recommend hand washing the outer chamber and tossing the inner chamber and plastic parts in the top rack of the dishwasher.

The FDA indicates that while it’s not possible to fully sterilize pump parts at home, dishwashing soap and warm water will do just fine:

“All breast pump parts that come in contact with breastmilk, such as bottles, valves and breast shields, should be cleaned after each use. It is not possible to completely sterilize breast pump parts at home, even if you boil them. However, sterilization is not necessary to keep these parts safe and sanitary. You can do that by thoroughly washing away germs and bacteria with liquid dishwashing soap and warm water.”

*While all Ceres Chill parts do fit in home sterilizers, the high heat and intensity can be hard on the parts and affect the finish on the outer chamber.

As an extra cleaning measure, you can place the inner chamber in boiling water and pour boiling water inside the outer chamber, but as with all breastfeeding gear, prolonged exposure to high heat can damage the parts. We do not recommend actively boiling the parts for sustained periods. It's best to avoid boiling the plastic parts or the outside of the outer chamber.

Check out this blog post for more the important sterilizing and disinfecting information!

*Parents should not use any products (like certain soaps or cleaning tablets) unless the products indicate that they are safe for infants and use of food grade stainless steel, BPA free plastics and platinum silicone.

Yes! The ice does need to transfer its chill to your milk to bring the temperature down, so it will melt after several hours. The high quality seal and cold water still work to keep everything super cold for the rest of the time!

Always make sure that you have enough ice in your Chiller chamber to give you the best cooling capacity. Fill it with as many cubes as you can fit - for the Inner Chamber, this means filling it to the top. For the Outer Chamber, add enough ice cubes to be in contact with the bottom of the Inner Chamber.

Here’s an article with really great information on what is happening with your Chiller: On no, my ice is melting fast!

Yes! Just put hot tap water in the outer chamber before leaving for the day. When you want to warm milk or formula, just pour the cold milk/formula into the empty inner chamber (or any narrow neck bottle), screw it all back together, and wait 7-10 minutes. Then enjoy a perfectly warm bottle!

The Chiller can warm up to 3 bottles over the course of 10 hours.

We do not recommend putting the outer chamber of your Chiller in the fridge!

Please note that the outer chamber is an insulated container, which means that it will prevent external refrigeration. Without ice in the inner chamber, the outer chamber will essentially act like a thermos and keep cold liquids cold and hot liquids hot.

However, you can absolutely store your stainless steel inner chamber in the fridge! It is really great for transporting breastmilk to and from daycare or work without worrying about plastic bags leaking.

Yes! Absolutely! Your Chiller is an excellent way to safely transport chilled formula or warm a bottle of formula for your baby while you're on-the-go.

Check out our blog for all you need to know about using the Chiller for formula!

Yes! Two things to keep in mind when traveling by flight:

1. TSA might ask you to dump your ice while they test your milk, but you can refill the ice anywhere once you're through.

2. It's good to periodically unscrew the upper parts while you're on the plane to help reduce the chances of a pressure built up. The temperature and pressure changes that occur while on a flight can be pretty intense!

The Academy of Breastfeeding Medicine states that breastmilk can be kept at 59ºF for up to 24 hours, and the Chiller works to keep your milk at that temperature or less!

Research says yes! Knowledge is power so we want to give you all the knowledge we have. Check out the details here.

There is a lot of conflicting and outdated information on the internet on this topic (and all parenting topics, really). Moms need to do what they feel is best for themselves and their babies, whether it is using a cooler with separate bottles, combining their milk in one Chiller, or using one Chiller to chill and the other to store milk as needed. 

Here are three BIG differences:

1. A regular thermos can keep milk cold, or keep coffee hot, but the Chiller safely and reliably changes the temperature. It works with a patented dual-chamber system, so you just need to add a handful of ice cubes to one chamber, and your milk to the other! As the ice melts, it transfers its cooling power to your milk!

2. Ceres Chill is tested and certified for use with infants. If you love science, charts and consumer safety reports, we have all of that for you here.

3. Because it was designed by a pumping, hardworking mom for other pumping, amazing, hardworking moms, it is incredibly versatile. It has all the compatible threading to connect your pump directly to the Chiller so you can pump into it and eliminate added risks of spills or contamination. It can also become a baby bottle by adding a bottle nipple, AND it can warm bottles. The list goes on!

No more worry and so much more freedom! Pumps are improving every day, so why should breastmilk storage be stuck in the stone age?!

Unlike bulky coolers or relying on a fridge, Ceres Chill gives you portable, long-lasting cooling - anywhere you go.It keeps milk safe for 16 hours (DEMI)-20 hours(OG) without ice packs or electricity, fits easily in a bag, allows you to pump directly into it, AND it can warm bottles! No hauling a cooler, no hunting for a fridge - simple, sleek, and stress-free milk storage designed for parents on the move.

Oh, and you can use it forever as your own water bottle!

Our products are made out of the highest quality materials, because moms deserve the best!

Breastmilk Chiller - The inner chamber and outer chamber are made out of 304 Food Grade stainless steel. The upper cup, cap and connector are made out of BPA-free plastic.

Milkstache - The Luxe Milkstache chest is made with 304 Food Grade stainless steel, and the sides of the trays are made out of BPA-free plastic. The bottom of the trays and the flexible tops are made out of laboratory-tested food grade silicone.

Bloom Bottle - our Bloom bottle is completely plastic-free. It is made with borosilicate glass glass and a premium silicone nipple collar.

Shield Maidens - Our nipple shields are made out of laboratory-tested, food grade silicone.

As always - no BPAs or lead components in ANY Ceres Chill products! Check out our science page for all of the cool consumer tests reports and information!

We definitely want to make sure that everything is working as it should! Check out our troubleshooting page and reach out to us at info@cereschill.com with any questions. We always want to help.