Is Ello Cooper dishwasher safe?
Sometimes — the Tritan body is top-rack safe, but the lid and gasket should be hand washed.
Quick facts
| Dishwasher safe? | Sometimes — Sometimes — with care |
|---|---|
| Category | Drinkware |
| Source | AI-reviewed · manufacturer guidance & material science |
| Last checked | 2026-07-28 |
Why
The Ello Cooper is made of Eastman Tritan copolyester, a BPA-free plastic that is generally dishwasher safe on the top rack due to its heat resistance up to about 212°F (100°C). However, the lid contains a silicone gasket and a flip-top mechanism with small crevices. In the dishwasher, high heat and harsh alkaline detergents can cause the silicone to degrade over time, leading to loss of seal integrity and potential leaking. The lid's internal components may also trap moisture, promoting mold growth. The manufacturer recommends top-rack washing for the bottle body only, and hand washing the lid and gasket to prolong life. Repeated dishwasher use can cause the silicone to become brittle or discolored, and the lid's print may peel. The body itself is resistant to clouding and etching, but the lid's plastic parts may warp if placed on the bottom rack near the heating element.
How do you wash Ello Cooper?
- Disassemble the lid by pulling the silicone gasket out of the cap.
- Hand wash the lid, gasket, and straw (if included) in warm soapy water using a soft sponge.
- Rinse all parts thoroughly to remove soap residue.
- Wash the Tritan bottle body on the top rack of the dishwasher, away from the heating element.
- Alternatively, hand wash the bottle body with a bottle brush to ensure deep cleaning.
- Allow all parts to air dry completely before reassembling to prevent mold.
- Reassemble the lid by snapping the gasket back into place securely.
What happens if you put Ello Cooper in the dishwasher?
If you put the entire Ello Cooper in the dishwasher, after one wash you may not notice immediate damage, but the silicone gasket may become slightly less pliable. After repeated washes (10+ cycles), the gasket can harden, crack, or lose its shape, causing the lid to leak. The lid's plastic components may warp if placed on the bottom rack, leading to a poor seal. The body itself will likely remain clear and intact, but the lid's print or decal may fade or peel. The damage is primarily functional (leaking) and cosmetic (discoloration, peeling). The body is durable, but the lid's lifespan is significantly shortened. Eventually, you may need to replace the lid or gasket to maintain a leak-proof seal.
Frequently asked questions
- Can the Ello Cooper be used with hot liquids?
- Yes, the Tritan body can handle hot liquids up to about 212°F (100°C), but the lid and gasket are not designed for extreme heat; avoid boiling water.
- Is the Ello Cooper microwave safe?
- No, the Ello Cooper is not microwave safe. The metal components in the lid and the plastic body can be damaged or cause sparks.
- How often should I replace the silicone gasket?
- Replace the gasket every 3-6 months or sooner if you notice cracks, hardening, or leaks. Regular hand washing extends its life.
- Can I put the Ello Cooper in the freezer?
- Yes, the Tritan body is freezer safe, but leave some space for expansion and avoid freezing the lid to prevent damage to the gasket.
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Last updated 2026-07-28. General guidance — always check your product’s care label. How we verify · Dishwasher care guides.