What Containers Are Safe to Use in a Microwave?

Choosing the right container for your microwave matters — the wrong one can warp, melt, or even release harmful chemicals. Here’s a simple guide to help you stay safe and make your cooking easier.

Safe Containers for Microwave Use

Glass dishes – Heat-resistant glass is one of the safest materials for microwaving food. Ideal for reheating and cooking evenly.
Ceramic bowls – Unglazed or microwave-safe ceramics work well, but avoid those with metallic trims or decorations.
Microwave-safe plastic – Only use plastics clearly labelled as microwave-safe. These are designed to withstand heat without melting or leaching chemicals.
Silicone containers – Perfect for steaming or reheating. They’re flexible, non-toxic, and handle temperature changes well.

Containers to Avoid

Metal containers – Metal reflects microwaves, causing sparks and potential damage to your appliance.
Aluminium foil – Can cause arcing or fires unless used in very small amounts and under supervision.
Takeaway containers – Many single-use plastics aren’t designed for reheating and can warp or release chemicals.
Plastic tubs without a label – If it doesn’t say microwave-safe, don’t risk it.

Quick Tip

Before using any container in the microwave, check the base or packaging for a microwave-safe symbol — usually a box with wavy lines inside it.

Why Safety Matters

Microwaving the wrong materials can cause fires, release toxins, or damage your appliance. Always choose containers designed for heat exposure to protect both your health and your microwave’s lifespan.

CATA’s Commitment to Kitchen Safety

At CATA, we design our kitchen appliances with safety and convenience in mind. From microwaves to induction hobs, every product is built to meet the highest safety standards for modern homes.