Introduction
Thank you for choosing the CERES CHILL OG Breastmilk Chiller. This manual provides essential information for the safe and effective use of your chiller. Please read these instructions carefully before first use and retain for future reference.
The CERES CHILL OG Breastmilk Chiller is designed to safely store and transport breastmilk, maintaining safe temperatures for up to 20 hours. Its versatile design allows for direct pumping, feeding, and various storage capacities.
Product Components
The CERES CHILL OG Breastmilk Chiller consists of several key components designed for optimal functionality and safety.

Image: The CERES CHILL OG Breastmilk Chiller, showcasing the main insulated bottle, inner chamber, and a pump adapter. This image illustrates the complete product assembly.
- Outer Insulated Bottle: The primary thermal container, made of stainless steel, designed to keep contents cold or warm.
- Inner Chamber: A removable stainless steel bottle that holds breastmilk or ice, depending on the configuration.
- Lid/Cap: Secures the contents of the chiller and can be used as a feeding bottle.
- Gaskets: Platinum silicone gaskets ensure a leak-proof seal.
- Pump Adapter (Optional/Not Included): Allows direct pumping into the inner chamber.
Safety Materials

Image: An infographic detailing the materials used in the CERES CHILL OG Breastmilk Chiller, highlighting BPA-free plastic, platinum silicone gaskets, 304 food-grade stainless steel, copper lining, and a bismuth glass seal, all tested for infant safety.
- BPA-Free Plastic: All plastic components are free from BPA.
- Platinum Silicone Gaskets: High-quality, safe silicone for sealing.
- 304 Food-Grade Stainless Steel: Used for the main body and inner chamber.
- Copper Lining: Located between the double wall of the outer chamber for enhanced insulation.
- Bismuth Glass Seal: Absolutely no lead components.
Setup and Configurations
The CERES CHILL OG Breastmilk Chiller offers multiple configurations to suit your needs for pumping, storage, and feeding.

Image: A visual guide demonstrating four primary configurations of the CERES CHILL OG Breastmilk Chiller: for feeding a baby with a nipple, for single or double pumping directly into the inner chamber, with the inner chamber capped for separate storage, and the complete chiller assembled for transport.
Capacity Options
The chiller can be configured for different capacities based on how the inner chamber and ice are utilized.

Image: An illustration detailing the three main capacity configurations: 12oz (most convenient, no-prep chilling with ice in the outer chamber), 27oz (extra capacity, no-prep chilling with ice in the inner chamber), and 34oz (maximum storage, for already-chilled or warm fluid in the outer chamber).
- 12 oz (Most Convenient):
- Place ice in the outer insulated bottle.
- Insert the inner chamber, which will hold your breastmilk.
- This configuration provides no-prep chilling for up to 12 oz of milk.
- 27 oz (Extra Capacity):
- Fill the inner chamber with ice.
- Pour breastmilk into the outer insulated bottle around the inner chamber.
- This configuration offers extended chilling for up to 27 oz of milk.
- 34 oz (Maximum Storage):
- Remove the inner chamber.
- Fill the entire outer insulated bottle with already-chilled breastmilk.
- This configuration maximizes storage for pre-chilled milk or other fluids.
Operating Instructions
Chilling Breastmilk
The CERES CHILL OG Breastmilk Chiller is designed to keep breastmilk cold for up to 20 hours. For optimal performance:
- Prepare Ice: Fill the inner chamber with ice for 27 oz capacity, or fill the outer chamber with ice around the inner chamber for 12 oz capacity. Ensure the ice is fresh and clean.
- Add Milk: Pour freshly expressed breastmilk into the designated milk-holding area (inner chamber or outer chamber, depending on your chosen configuration).
- Seal Securely: Ensure all caps and gaskets are properly aligned and tightened to prevent leaks and maintain temperature.
- Extended Chilling: If more than 20 hours of chilling is required, replenish the ice as needed.
Pumping Directly into the Chiller
The chiller is compatible with most narrow-mouth pumps and nipples. For wide-mouth pumps, a wide-to-narrow neck adapter is required (not included).
- Assemble for Pumping: Attach your pump's flange assembly directly to the inner chamber or use an appropriate adapter for your pump type.
- Pump: Express milk directly into the inner chamber.
- Store: Once pumping is complete, cap the inner chamber and place it into the outer insulated bottle with ice for chilling.
Using as a Feeding Bottle
The lid of the chiller can be used as a bottle to feed your baby.
- Transfer Milk: Pour breastmilk from the chiller's inner chamber into the lid.
- Attach Nipple: Securely attach your baby's favorite nipple to the lid.
- Feed: The lid is now ready for feeding.
Warming Bottles On-the-Go
The CERES CHILL can also be used to warm bottles when a traditional warmer is unavailable.
- Prepare Hot Water: Fill the outer chamber with hot water.
- Insert Milk Bottle: Place a bottle containing cold milk or formula into the hot water in the outer chamber.
- Warm: Seal the chiller and allow 7-10 minutes for warming. The chiller can warm up to 3 bottles in 10 hours.
Maintenance and Cleaning
Proper cleaning and maintenance ensure the longevity and hygiene of your CERES CHILL OG Breastmilk Chiller.
- Hand Wash Only: The entire chiller should be hand washed. Do not place the outer insulated bottle in a dishwasher.
- Disassemble for Cleaning: Separate all components (outer bottle, inner chamber, lid, gaskets) before washing.
- Use Mild Soap: Wash all parts with warm water and mild dish soap.
- Rinse Thoroughly: Rinse all components thoroughly to remove any soap residue.
- Air Dry: Allow all parts to air dry completely before reassembling or storing to prevent mold or mildew.
- Gasket Care: Periodically check gaskets for wear and tear. Ensure they are properly seated during reassembly to maintain a leak-proof seal.
Compatibility
The CERES CHILL OG Breastmilk Chiller is designed for broad compatibility with various breast pump brands.

Image: A chart illustrating breast pump compatibility. It lists brands natively compatible with narrow-neck parts and brands requiring an adapter for wide-neck parts.
Native Compatibility (Narrow-Neck Parts)
- Medela
- Evenflo
- Ameda
- Ardo
- Gland
- Kidstime
- Nibble
- Babysteps
- Bellemama
- And similar narrow-neck parts
With Adapter (Wide-Neck Parts)
- Spectra
- Philips Avent
- Bella Baby
- Baby Buddha
- Cimilre
- Motif by Aeroflow
- And similar wide-neck parts
For Lansinoh or Hygeia pumps, please contact CERES CHILL customer support for specific compatibility information.
Troubleshooting
This section addresses common questions and issues you might encounter with your CERES CHILL OG Breastmilk Chiller.
- Milk not staying cold for 20 hours:
- Ensure sufficient ice is used and replenished if needed.
- Verify all seals and caps are tightly closed.
- Pre-chill the chiller with ice water for 10-15 minutes before adding milk for optimal performance.
- The initial temperature of the milk and ambient temperature can affect chilling duration.
- Leaking:
- Check that all gaskets are properly seated and free from damage.
- Ensure caps are securely tightened.
- Avoid overfilling the chiller beyond its recommended capacity for each configuration.
- Difficulty closing the large cap:
- Align the cap carefully before twisting to ensure it threads properly. Avoid forcing it.
- Ensure no debris is obstructing the threads.
- Inner chamber bulging after freezing water:
- Do not freeze water directly in the inner chamber as this can cause damage due to expansion. Always use ice cubes.
Specifications
| Feature | Detail |
|---|---|
| Model Number | BC-01 |
| Product Dimensions | 3.5 x 3.5 x 11 inches |
| Item Weight | 1.11 pounds (approx. 17.8 ounces) |
| Material Type | Stainless Steel (304 Food-Grade), BPA-Free Plastic, Platinum Silicone |
| Capacity | 12 oz, 27 oz, or 34 oz (depending on configuration) |
| Chilling Duration | Up to 20 hours (with ice) |
| Dishwasher Safe | No (Hand wash only for outer bottle; inner chamber parts may be dishwasher safe, refer to specific product packaging for inner parts) |
| Batteries Required | No |
| Color | Mombré (Blue & Pink gradient) |
Warranty and Support
For warranty information, product support, or to purchase replacement parts, please visit the official CERES CHILL website or contact their customer service department directly. Details can typically be found on the product packaging or the brand's online store.
CERES CHILL is committed to providing quality products and support to its customers.



