Ceres Chill — The Breastmilk Storage Game-Changer

How to Use the Ceres Chill OG Chiller with Pump Converters: Step-by-Step Guide

How to Use the Ceres Chill OG Chiller with Pump Converters: Step-by-Step Guide

By Ceres Chill — The Breastmilk Storage Game-Changer | Published: 2026-08-23

Category: How-to Guides

Learn how to pump directly into your Ceres Chill OG Chiller using pump converters. Step-by-step instructions, tips, and product recommendations for a seamless pumping experience.

Pumping breast milk while managing a busy schedule can be challenging. The Ceres Chill OG Chiller/Warmer is a game-changer for mothers who need to store milk safely at the perfect temperature for up to 20 hours. But did you know you can pump directly into it? With the right pump converters, you can streamline your pumping routine and minimize the number of bottles to wash.

pump converters
pump converters

In this step-by-step guide, we'll walk you through how to use your Ceres Chill OG Chiller with pump converters, from setup to feeding. We'll also share tips on choosing the right accessories and maintaining your chiller for long-lasting use.

Why Use Pump Converters with Your Ceres Chill?

Pump converters are small adapters that connect your breast pump flange directly to the opening of your Ceres Chill OG Chiller. This allows you to pump milk straight into the chiller, eliminating the need for separate collection bottles. The benefits are numerous: fewer items to wash, less milk transfer (which reduces the risk of contamination), and a more efficient pumping session.

Using a pump converter also helps maintain the milk's temperature. Since you're pumping directly into the chilled container, the milk is immediately cooled, preserving its nutrients and freshness. This is especially useful when you're away from home, at work, or traveling.

  • Minimizes milk transfer and potential spills
  • Reduces the number of bottles and parts to clean
  • Keeps milk at a safe temperature from the moment it's expressed

What You'll Need: Essential Accessories

Before you start, gather the necessary items. You'll need your Ceres Chill OG Chiller, a pump converter that is compatible with your breast pump model, and your pump's flanges. Some pump converters also require a separate adapter ring, so check your pump's manual or the converter's specifications.

Ceres Chill offers a range of accessories that can enhance your pumping experience. For instance, the OG+ Silicone Boot provides extra grip and protection for your chiller, making it easier to handle during pumping sessions. Additionally, the Pumping Accessory Pouch is perfect for storing your pump parts and converter when you're on the go.

OG+ Silicone Boot
OG+ Silicone Boot
  • Ceres Chill OG Chiller/Warmer (e.g., Legacy OG Chiller/Warmer - Dawn)
  • Pump converter compatible with your pump
  • Breast pump flanges
  • Optional: OG+ Silicone Boot for added grip

Step-by-Step: How to Pump Directly into Your Ceres Chill

Step 1: Prepare your chiller. Remove the inner chamber and fill it with ice according to the instructions. Ensure the lid is securely closed and the chiller is upright.

Step 2: Attach the pump converter. Remove the lid of the chiller and screw the pump converter onto the opening. Make sure it's tight to prevent leaks.

Step 3: Connect your pump flange. Attach your breast pump flange to the converter. The flange should fit snugly, and you may need a silicone adapter if the sizes don't match.

Step 4: Pump as usual. Turn on your pump and express milk directly into the chiller. The milk will be chilled immediately, preserving its quality.

Step 5: When finished, remove the flange and converter, and replace the lid. Your milk is now safely stored and ready for later use.

  • Always test the seal before pumping to avoid leaks.
  • If you're using a double pump, you may need a Y-connector to attach both flanges to the chiller.

Choosing the Right Pump Converter

Not all pump converters are universal. You'll need to select one that matches both your pump brand and the thread size of your Ceres Chill. Common pump brands like Medela, Spectra, and Lansinoh have different thread sizes, so it's essential to choose a converter that specifies compatibility.

If you're unsure, check the product description or contact customer support. Ceres Chill also offers a variety of accessories that can help. For example, the Bloom Bottle Companion Tops can convert your chiller into a bottle for feeding, which is handy if you want to switch from pumping to feeding without transferring milk.

  • Check the thread size: Most Ceres Chill models have a standard wide mouth, but converters vary.
  • Consider buying a converter that includes multiple adapters for different pump brands.

Tips for a Smooth Pumping Experience

To get the most out of your Ceres Chill with pump converters, here are some practical tips. First, always ensure your chiller is properly sealed before pumping. A loose seal can cause leaks and waste precious milk. Second, if you're pumping large volumes, you may need to empty the chiller partway through your session to avoid overfilling.

Cleaning your chiller and converter after each use is crucial. The All-You-Need Washbasin Bag is a convenient solution for washing your pump parts and converter while traveling. It's collapsible and fits easily in your diaper bag.

Finally, consider investing in a personalized chiller or bundle to make your pumping routine even more enjoyable. The Personalized Clean Feeding Bundle includes a custom chiller and accessories, making it a great gift for new moms.

  • Keep spare converter parts in your Pumping Accessory Pouch for emergencies.
  • Label your chiller with your name to avoid mix-ups at work or daycare.

Feeding Directly from the Chiller

One of the best features of the Ceres Chill is its versatility. When you're ready to feed, you can pour milk into a bottle or use a companion top to convert the chiller into a feeding bottle. The Bloom Bottle Companion Tops fit perfectly on the chiller, allowing you to attach a nipple and feed directly from the container.

This is especially useful when you're out and about. You can pump into the chiller, then later attach a companion top and feed your baby without needing to transfer milk to a separate bottle. It saves time and reduces the number of items to carry.

  • The 6oz Bloom Glass Baby Bottle is another great option for feeding expressed milk.
  • For a complete solution, consider the Ultimate Gift Bundle, which includes multiple accessories.

Using pump converters with your Ceres Chill OG Chiller is a simple and efficient way to pump, store, and feed breast milk. With the right accessories and a little practice, you'll streamline your routine and enjoy more flexibility. Explore our range of chillers and accessories to find the perfect setup for your needs.

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