Microwaving Sistema Plastic Containers: Safe Or Not?

are sistema plastic containers microwave safe

Sistema Plastics is a New Zealand-based company that manufactures plastic food containers. The company offers a wide range of products, including the Sistema KLIP IT range, KLIP IT PLUS, TO GO Stax, and Microwave noodle bowls, which are designed to be microwave-safe. However, there are mixed reviews about the containers, with some users reporting issues with cracking, leaking, and melting when used in the microwave. It is important to note that while these containers are convenient for storing and reheating food, certain precautions must be taken to avoid damage and ensure safe usage.

Characteristics Values
Microwavable Yes, but with the lid removed to avoid steam build-up
Dishwasher safe Yes, on the top rack only
Freezer safe Yes
Stain-resistant Yes, but may stain when reheating certain foods
Food safe Yes
Oven safe No
Hot plate safe No
Grill safe No
Stove-top safe No
Convection microwave oven safe No
Country of origin New Zealand
BPA-free Yes
Phthalate-free Yes

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Some Sistema containers are designed for microwave use

The Sistema Klip It range is another example of Sistema containers that are safe for microwave use. These containers are versatile, stackable, and durable, and can be used for food storage in the fridge, freezer, and pantry. They feature Sistema's easy locking clips and flexible seal, which keep food fresh for longer.

The Sistema Microwave Rectangle containers have also been specifically designed for microwave cooking and reheating. These containers are ideal for leftovers and meal prep.

It is important to note that while some Sistema containers are microwave-safe, not all of them are. For example, the Sistema KLIP IT PLUS containers are safe for freezer use but should not be used in a conventional oven, on a hot plate, under the grill, or in a convection microwave oven using convection settings.

Additionally, when using Sistema containers in the microwave, it is recommended to remove the lid to prevent dangerous steam build-up and to avoid sealing plastic lids while heating, as this can create extra pressure and cause the lid to warp.

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Plastic lids should be removed to avoid steam build-up

When using plastic containers in the microwave, it is important to exercise caution to ensure safe usage and avoid potential hazards. One crucial precaution is to always remove the plastic lids before placing the container in the microwave. This is because sealing the container with the lid while heating can lead to a dangerous buildup of steam.

The buildup of steam occurs due to the increased pressure inside the container. As the contents of the container are heated, steam is generated, and without a proper vent, the steam becomes trapped. This buildup of steam can have two undesirable consequences. Firstly, it can cause the lid to warp or deform due to the increased pressure. Secondly, and more importantly, it can create a hazardous steam buildup, which can be released suddenly and cause burns or other injuries.

To avoid this issue, it is recommended to remove the plastic lids before microwaving. This allows the steam to escape and prevents the buildup of pressure. It is also advisable to cover the container with a paper towel to prevent splattering. By following this simple precaution, you can safely use Sistema plastic containers in the microwave without the risk of steam-related incidents.

While Sistema plastic containers are generally microwave-safe, it is important to note that excessive reheating time or heating certain types of food can damage the container. For instance, foods with high fat, sugar, or oil content may damage the container. Additionally, it is recommended to allow the container to cool before sealing it, as the heat can affect the sealing mechanism. By following these guidelines, you can safely use Sistema plastic containers in the microwave while avoiding potential issues related to steam buildup and food types.

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Containers should not be used for cooking

While Sistema plastic containers are generally microwave-safe, they are not intended for cooking. Here are some reasons why Sistema plastic containers should not be used for cooking:

Potential Damage to the Container

Sistema plastic containers are designed for storing and reheating food, not for cooking. Using them for cooking, especially for prolonged periods, can damage the containers. This is because the plastic may not be able to withstand the high temperatures and prolonged exposure to heat during the cooking process. Excessive heat can cause the plastic to warp, melt, or become stained.

Food Safety Concerns

Some foods are not suitable for cooking in plastic containers. For example, foods with high fat, sugar, or salt content, such as chocolate, candies, butter, or syrup, could severely damage the container and potentially cause the plastic to melt. Additionally, certain foods like tomato-based sauces, beetroot, curries, or foods seasoned with turmeric may stain the container.

Steam Build-Up

When using Sistema plastic containers in the microwave, it is essential always to remove the lid. Sealing the plastic lid while heating can create extra pressure and cause a dangerous steam build-up. This can lead to warping of the lid or, in some cases, a sudden release of steam, which could be hazardous.

Alternative Options

While Sistema offers microwave-safe containers designed for reheating food, there are alternative options better suited for cooking. Glass or ceramic containers are often recommended for cooking in the microwave as they are less likely to leach chemicals into food and can withstand higher temperatures. Metal containers should be avoided in microwaves due to the risk of arcing and fire.

In conclusion, while Sistema plastic containers are convenient for storing and reheating food, they should not be used for cooking. By following the recommended guidelines, users can ensure the longevity of their containers, maintain food safety, and avoid potential hazards associated with improper use.

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Containers may stain when reheating certain foods

While Sistema® plastic containers are generally microwave-safe, there are certain precautions to take when reheating food to prevent damage to the containers and ensure safe usage. One important precaution is to always remove the lid before placing the container in the microwave. This is to allow steam to vent and prevent a dangerous build-up of pressure or steam. Covering the container with a paper towel can also help to prevent splattering.

Additionally, it is important to note that Sistema® plastic containers may stain when reheating certain types of food. This is particularly true for foods with high fat or sugar content, such as chocolate, candies, butter, or syrup. Reheating these types of foods could potentially melt the container and cause severe damage. It is recommended to avoid using Sistema® containers for reheating foods with high fat or sugar content to prevent any issues.

Other foods that may cause staining include tomato-based sauces, beetroot, curries, and dishes seasoned with turmeric. While these foods may not melt the container, they can leave stubborn stains that are difficult to remove. It is worth noting that even if staining occurs, the container is still safe to use and can be washed with warm soapy water or placed on the top rack of the dishwasher.

To prevent staining and ensure the longevity of Sistema® plastic containers, it is advisable to avoid reheating foods with high fat, sugar, or dye content. For example, if reheating a tomato-based dish, transferring it to a microwave-safe plate or bowl might be a better option. By taking these precautions, users can maintain the condition of their Sistema® containers and avoid any potential issues.

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Containers are made from food-safe, durable materials

The safety of food storage containers is a significant concern. While plastic wrap, bags, and containers are convenient and widely used, they may not always be the healthiest or most sustainable option. Some plastics can leach toxic chemicals into food, especially when heated, and older plastics or single-use plastics reused multiple times may pose a risk. Therefore, it is essential to choose food storage containers made from food-safe, durable materials.

Sistema plastic containers are designed with food safety and durability in mind. The company takes its role as a plastic food manufacturer seriously and uses state-of-the-art machinery to create innovative products. Sistema's plastic containers are made from durable, food-safe materials that are BPA-free, ensuring that no harmful chemicals will leach into your food. These containers are also freezer-safe, microwave-safe, and top-rack dishwasher-safe, making them versatile and convenient for various food storage needs.

The Sistema Klip It range, for example, features easy locking clips and a flexible seal, ensuring that food stays fresh for longer. These containers are stackable, saving space in your pantry, fridge, or freezer. While they can be used in the microwave, it is important to remove the lid to prevent dangerous steam build-up. Additionally, excessive reheating time in the microwave may damage the container, so caution should be exercised.

When choosing food storage containers, it is important to consider materials other than plastic as well. Glass, stainless steel, and ceramic are non-reactive, non-toxic, and easily sanitized. They offer better longevity than plastic and are microwave-safe, oven-safe, and dishwasher-safe. Glass containers, in particular, are nonporous, chemically inert, and recyclable, making them a sustainable and safe option for food storage.

In conclusion, containers made from food-safe, durable materials are essential for maintaining food safety and freshness. While Sistema plastic containers offer convenience and innovation, it is also worth considering alternatives like glass, stainless steel, or ceramic containers for their longevity and non-toxic properties. By making informed choices about the materials our containers are made from, we can ensure the safest and most sustainable food storage options for ourselves and the environment.

Plastic Containers: Safe to Microwave?

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Frequently asked questions

Yes, Sistema plastic containers are safe to use in the microwave. However, you should always remove the lid to avoid dangerous steam build-up and cover with a paper towel to prevent splattering.

Yes, Sistema® KLIP IT PLUS™ containers are not intended for cooking. Excessive reheating time in the microwave may damage the container.

Yes, foods with high salt, oil, fat or sugar content such as chocolate, candies, butter, or syrup may damage the container.

Yes, always allow food to cool before placing the lid and sealing. Sistema containers should also be washed before first use.

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