Glasslock containers are known for their durability and versatility, but many users wonder about their safety in the microwave. The good news is that Glasslock containers are designed to be microwave safe, making them a convenient choice for reheating leftovers or cooking simple meals. However, there are important guidelines to follow to ensure both your safety and the longevity of your containers.
In this article, we'll cover everything you need to know about using Glasslock in the microwave, including which lids are safe, temperature limits, and common mistakes to avoid. Whether you're a new user or a long-time fan, these tips will help you get the most out of your Glasslock containers.
Are Glasslock Containers Microwave Safe?
Yes, all Glasslock containers are made from tempered glass that is designed to withstand microwave heat. The glass is non-porous and does not leach chemicals, making it a safe choice for food storage and reheating. However, not all lids are microwave safe. Glasslock offers two types of lids: plastic lids and glass lids. The plastic lids are generally not recommended for microwave use unless specifically labeled as microwave safe. Always check the bottom of the lid for microwave-safe symbols or instructions.
For microwave use, it's best to use the glass lids that come with some Glasslock sets, such as the 11293 – 20pc Glasslock Oven Safe Box Set. These lids are oven safe up to 450°F and can also be used in the microwave. If you're using plastic lids, remove them before microwaving or use a microwave-safe cover like a paper towel to prevent splatters.
11293 – 20pc Glasslock Oven Safe Box Set
- Always remove plastic lids before microwaving unless they are marked microwave safe.
- Glass lids can be used in the microwave but may become hot; use oven mitts to handle.
- Avoid microwaving empty containers or containers with very little food.
Temperature Limits and Best Practices
Glasslock containers can handle temperatures from -4°F to 450°F, making them suitable for freezer, oven, and microwave use. However, sudden temperature changes can cause glass to break. To prevent thermal shock, avoid moving a container directly from the freezer to the microwave or from the microwave to a cold surface. Let the container sit at room temperature for a few minutes before microwaving.
When microwaving, use medium power and shorter intervals to heat food evenly. Stir food halfway through to avoid hot spots. For liquids, leave the lid slightly ajar to allow steam to escape. The OCST-090 Glasslock Oven Safe Square 3.3 cups is a great size for reheating soups or stews, as its square shape fits well in most microwaves.
OCST-090 Glasslock Oven Safe Square 3.3 cups
- Avoid sudden temperature changes: let containers warm up to room temperature before microwaving.
- Use microwave-safe covers or paper towels to prevent splatters without sealing tightly.
- Do not microwave containers with metal trim or handles.
Common Mistakes to Avoid
One common mistake is microwaving containers with plastic lids that are not microwave safe. This can cause the lid to warp or melt, potentially contaminating your food. Always check the lid's label. Another mistake is using scratched or chipped containers. While Glasslock is durable, any damage can weaken the glass and increase the risk of breakage. Inspect your containers regularly and replace any that show signs of wear.
Also, avoid microwaving foods with high sugar or fat content for extended periods, as these can reach very high temperatures and cause the glass to crack. For example, reheating butter or syrup should be done in short bursts. For everyday reheating, the OCRT-048 Glasslock Oven Safe Rectangle 1.6 cups is perfect for small portions like side dishes or desserts.
- Never microwave containers with non-microwave-safe plastic lids.
- Discard any containers with cracks, chips, or scratches.
- Avoid overheating foods with high sugar or fat content.
By following these simple guidelines, you can safely enjoy the convenience of Glasslock containers in your microwave. Remember to always remove non-microwave-safe lids, avoid thermal shock, and inspect your containers regularly. For a versatile set that includes microwave-safe glass lids, check out the 11293 – 20pc Glasslock Oven Safe Box Set – it's perfect for all your microwave reheating needs.
